1. Be certain your supply hoses are woven steel, rather than rubber. Sometimes leaks occur in the hoses, not in the machine itself, and a plumbed drip pan can save you from both types of catastrophes. I have friends in a $1 million home whose upstairs floors were ruined by a leak from an upstairs laundry room which had an UNPLUMBED pan, unable to catch all the water that leaked (and even if it does, how do you deal with the water in the pan with no drain, other than with buckets??).
2. I have a Frigidaire FL model 2140, bought 3/2006 and running strong--with no repairs or service calls ever. I do not use liquid bleach, and always leave the door ajar and wipe the gasket seal dry with a hand towel. I also descale with citric acid on a quarterly basis. I'm sure one day the cheap aluminum spider bracket will break and then I'll need a new one, but for now I'm ok. It has a 3.5 cu ft basket (close to the max size offered in 2006, which was 3.7 on Whirlpool Duets, but small by today's standards). I can wash a full/queen comforter but not a king comforter. So once a year I trudge down to the laundromat and run two loads in their Milnor "triple load machines", one comforter per machine. Their dryers get the comforters dry in 30 minutes, and I always use duvet covers so that the comforters need cleaning once a year maximum. You may have to do the same without a FL---and I understand since this is not a first floor installation, there are vibration reasons to chose a TL and not a FL.
3. If you do choose a FL, be sure there is space to leave the door permanently ajar. Some machines now have a retractable bracket (supposedly child proof) which holds the door open a few inches without allowing it to swing freely, which is a good space saver in tight applications. I believe some Frigidaire models now have this feature. Also, you didn't mention the age of your child (you mentioned a family of three) but if you have a young child, you need to be able to secure your laundry room if there is a FL. They can be deadly attractions to young children.