I don't mind at all. I've heard various Tripath, TDA7498E, TPA3116(D2), TBI MILLENIA (TPA3110), Class D Audio SDS (multiple modules), ICEPower 125ASX2 from Ghent Audio, Pascal from D-Sonic, Temple Audio original monoblocks and a few others I can't remember at the moment. I would rate these current Temple monos at the top of the heap. They don't have the crazy power output of the Pascal modules from D-Sonic, but for most everyone's applications the 70W output of these is sufficient. Not only that, I believe that of all those that I listed these are the most balanced sounding and possibly have the lowest noise floor. They're about as neutral as you could want from an amplifier and give you exactly what you put into them. So far they're my favorites and I wouldn't be selling them if I didn't absolutely need to.
Let me know if you have any other questions. I'd be happy to answer or elaborate on my above reply.
Edit: No, the cases do not get hot. The "warmest" they've ever gotten is a hair above room temp.