Bob:
I do have a Fagor (6 qt, I think) from way back then -- it has 3 settings, I think, not sure, it's 5/10/15 PSI. I think I bought it in 1998. *Very* good, quiet, doesn't vent much. I *really* like the pots that let you set a pressure and vent it above that, so you *know* something needs adjusting -- some pots, like the Kuhn Rikon have a simpler, more durable valve, but it's just a rod that shows a number of rings to tell you what the pressure is, so you need to pay way more attention and lower the heat if you want to cook at the lower pressure(s). You still need to pay attention to the pots with settings, but it makes more noise when it's venting, so you know you have to lower the heat.
I know you are switching to induction, and that's wonderful. But *because* you are switching to induction I wanna talk about things that are not immediately obvious to people who never used it before. I presume you want to enjoy the speed that induction can bring when cooking. To use the burners at highest efficiency, you want pots that match the maximum diameter that burner can handle. That means you need to pick something to start, either choose a range/stove that has burners as close as possible to your pots/pans or choose a range and *then* buy pots/pans that match the burners. Sure, a pressure cooker that has an 8" bottom (the disk on the bottom, not the inside diameter in the pot) will heat up and come up to pressure on a 10" burner, but it will take longer than if it were cooking on a 8" burner or you had a 10" pressure cooker on the 10" burner. It will probably be still faster than most gas stoves, but why wait if you can match the two and get the pot on powerboost reach pressure in record time?
So, yeah, consider the sizes of the burners your stovetop will have, and maybe it will make more sense to buy a short and wide 8 or 10 quart pot instead of a tall and skinny 6 qt pot. The advantage of the short and wide pots will be speed, the advantage of the tall and skinny pots will be that you can often stack several steamer inserts and cook several dishes at the same time.
I'm not sure if you will be hand washing the pressure cooker(s), if you want to be able to put them in the dishwasher, make sure it is possible to do so: many PCs can have the *base* in the DW but not the lid with the valves; others (like some models from Fissler and WMF) let you quickly remove the valve/handle and you can just rinse those by hand and the rest of the pressure cooker, including lid, can go in the DW.
There's a lot more to say, and I sure hope you spur us into several interesting threads, but I'd like to mention at least 3 places to check -- please note I do not agree with *everything* that they have to say, but they do have the basics covered pretty well:
First, a Cook's Illustrated/America's Test Kitchen Equipment Review of pressure cookers in general
Then why they think the Fagor Duo is a best buy
And finally, a web site (link below) by Laura Pazzaglia -- she wrote several books and is an advisor for several manufacturers of pressure cookers. Her website has recipes, time tables, and you may want to check her reviews of the pots you are interested in. She also started a Youtube channel teaching how to use PCs (link from the website) and, even though I've been using PCs for decades, I've learned a few new things, so I encourage everyone to take a peek.
Besides the Fagor, I have 10 qt. Innova jiggler type PC (bought at the same time I got the Fagor) that was very nice, but they went out of business and the aluminum disk on the bottom of the PC is not induction compatible, so I'm not using it anymore. I also recently (past September, I think) got an 8 qt. WMF PerfectPro and a 10 qt. Fissler Vitaquick which I really love.
Another thing I nearly forgot.
If you use the pressure cooker on the induction stove, you will enjoy a lot of speed and convenience, but you will still need to keep an eye on the pressure and lower/raise the heat accordingly, just like a regular stove.
My suggestion, if you have one of those portable induction burners, is check if it has a temperature setting that is close to the pressure cooker. I have a Max Burton, I think, that I got before I bought the induction range, that has a 250F setting. I often start the PC on the stovetop and use the powerboost to reach pressure and, after about 2-3 minutes that it has the pressure stabilized I transfer the pot to the Max Burton set for 250F and let it complete the task there: the portable burner keeps the temperature steady. Some models also not only keep the temperature steady but can turn off on a timer so you don't even have to pay much attention to the process from the time it reached pressure. I don't use it to raise the pressure from the start because it's only 1,800W I think.
Have fun, and keep asking questions and telling us what you learn so we can all make quick progress together!
Cheers,
-- Paulo.