There are many good integrated amps on the market. The basis for your selection will be budget, required features and of course, availability. The last factor is much less these days, with the online availability from almost anywhere.
I would first determine your budget, and list the features you want. Then research online (as you are now doing). My tastes are for music, with little interest in HT. There are products available from the usually mentioned companies (what are termed mass market) including Onkyo, Denon, Sony, etc. You can also find Vecteur, SimAudio, YBA, Linn, Rega, Creek, Arcam, and a host of others that will perform admirably.
One caution about weight, as with cost, it is not always a guarentee of quality.
