For what we do with our TC, slides make all of the difference. Extra floor space also gives us room for a dog crate if required. If a Bigfoot will work for what you plan to do, you can for sure do worse!
Slides can get out of adjustment, but they aren't that complicated. the biggest concern is when slides are added without enough structure to support the slide.
As far as things going wrong though, an RV has a lot of things that can go wrong or fail both inside and outside. Relatively speaking a slide is pretty simple. If we were talking TCs from 15 years ago, I'd have a different opinion. By 2005 or so, almost all but the new manufacturers figured out how to make slides reliable.
'10 Ford F-450, 6.4, 4.30, 4x4, 14,500 GVWR, '06 Host Rainer 950 DS, Torklift Talon tiedowns, Glow Steps, and Fastguns. Bilstein 4600s, Firestone Bags, Toyo M655 Gs, Curt front hitch, Energy Suspension bump stops.
NRA Life Member, CCA Life Member