Mowers.
It's been an interesting thread to watch. I've been checking in a few times per day. I cannot go vintage or cheap with a gas mower because of the hills. Here's the back-story.
My old mower was a Snapper Hi-Vac from the early 2000s. It was given to me by a friend who used it in his landscaping business until the engine was essentially blown to bits. I bought a new Briggs & Stratton overhead Valve engine for it because I could not afford the equivalent Honda engine. I also rebuilt the drive system, got a new Ninja blade, all four wheels, and a new handle. I should have just scrapped it and gotten a new one as the only part I didn't have to work on was the deck. I got the 190cc overhead valve engine and it could always be counted on to start on the 1st pull when cold, even after having sat all winter. My house had been abandoned for 2 years when I bought it (It's still very much a work in progress) and the grass was 4 feet tall. The Snapper went through it without skipping a beat and cut it all.
The problems were that it was heavy as lead. The new engine was huge and HEAVY! My hills are steep and it needed assistance to get going uphill but was better than anything else I have ever used before in similar situations. While it would start up easily when cold, once it was warm, forget it! I think some carburetor service would have fixed its starting problems. Recently, it was running well, but seemed to have limited power and would stall in thicker grass, which it had never done before. As I said before, I think some carburetor work would have set it right again.
When I bought my engine at my local Snapper dealer, I spoke at length with the guys at the parts counter on the pros and cons of different available engines. They told me that the hills would be a problem with the flathead engines because of oil starvation. The flathead engines were easier to service, but if I bought one, it would need more of it, especially with primary use on hills. I was also told that Honda engines run well, last a long time, seldom need service, but would be the most difficult to work on. I settled for the B&S OHV engine because the dealer told me that the OHV engine could better tolerate hills, was easier to service than a Honda engine, but would be more reliable than a flathead. It performed well, didn't drink oil, the carburetor always gave me trouble, but it drank gasoline like it was a V8.
At this point, I'm still leaning toward a Sanpper Ninja series with the disk drive system. I still have all of my Snapper accessories that could work with it. I've read some great things about Toro and some not so great things as well. Many of the Toro issues I've read about have been in regards to transmission failures. I'd consider Honda, if it was as good as a Snapper.
I like the concept of Electric, but have to have self-propulsion. I may even consider a battery powered mower, provided that it had the power to mulch and had a self-propulsion system as effective as the Snapper (rear wheel drive, variable speed, can start and stop easily many times in short distances). There are several abandoned houses in my neighborhood and I occasionally mow their lawns too to keep the local critter population at bay. Those yards are also hilly and in less than pristine shape. When I do mow them, the grass is usually 8 or more inches tall. I liked the Snapper because I could put the drive in slow and charge right in. The Snapper was a beast that could put its power to good use and could grind through just about anything. Is there a self-propelled electric mower that could do that?
I wish I knew who took my mower. I would like to introduce them to my wood chipper, and then my steep wooded ravine. (Yes, I really do own a steep wooded ravine and a wood chipper. I also have a very dark sense of humor.)
Here's the front of my house while I was having the roof replaced from the side with the most gentile hill, and oh look, there's my Volvo too:
