I kind of got the impression you were in the US, and you're a brave man! But, hopefully the quality is really there, and I know Loewe seems to have a good reputation, so hopefully that'll work out. Interestingly enough, my old Panasonic 42 inch plasma is 10 years old and is still working fine at my mother-in-laws, whereas the version of the same TV they bought a couple of years later died 4 years ago with a power supply failure. it's always such a roll of the dice it seems with any complex electronics. I've not really lost anything except for when lightning hit my neighbor's house when I lived in a house on a very small lot. It damaged two components that used CMOS touch switches, they are quite sensitive, so much so one unit that suffered failure of these and had to have them replaced wasn't even plugged into anything, power or connections. The EMP from the lightning strike took the devices out! So far, knock on wood, my 4 and a bit year old VT series Panasonic is still working.
As for your decision to go with the 77 instead of the 65 Eclipse, I've never met anyone yet who regretted going with a bigger screen. Some, right after buying it were "Gosh, that's huge, did I make a mistake?" and then after owning it a week were saying "Man, glad I didn't go with the smaller set!" 🙂