I'm a big fan of the original mainline games when they were survival horror. I also liked 4 a lot, but man did the franchise derail after that. 7 was a nice change of pace, and I appreciated it a lot. I was hoping with 7 they would make more games similar to that. It may have been different from the originals, but it was still a lot of fun. 8 was literally giving 7 the 4 treatment, which dampered my spirits. I was shocked they made the same mistake so soon after. I won't hold my breath for 9.
As for the remakes, REmake is on a whole different league from any of the later ones. That and the original of 1 are my favorite games in the franchise. REmake 2 was good, but I was a bit disappointed. REmake 3 was really disappointing. REmake 4 was good, but I was also a bit disappointed like with REmake 2.
I've only played the original side games, none of the later action ones. Dead Aim was surprisingly good. But I prefer the goofiness of the original Japanese name: Gun Survivor 4: Biohazard "Heroes Never Die". That's a SOVLful title if I've ever seen one. Outbreak 1 and 2 were really great and are also in need of remakes, but I'm not confident in modern Capcom. I also like quite a bit of the DLC of 7. That damn card game was addictive as fuck.