Here is my list of good animes that id recommend to watch:
(scoring is done based on 10 being the best)

Gundam 00 = 7 (Could be better but good graphics)

Gundam Seed = 8.5 (First good anime i watched)

Code Geass = 9 (All in one mecha/persona 4 like/supernatural blend)

Berserker = 7 (only because it needed a sequel and never got one)

Monster = 8 (Didnt finish it but was def good if u like murder mysteries and twitsted people)

Full Metal Panic! = 8 (so far.)