Aftermarket A/C , What brands are you guys using?

It depends on what engine you have, which you didn't tell us. A Sanden compressor is probably best for any. If a slant, some Aspen/Volare cars had a Sanden, so if you can find those brackets in a JY, be happy. For SB or BB, most use new brackets (Bouichillon and others). A full kit will cost ~$1000. You do much better piece-meal, but more effort.