This has been discussed so maaany times.. man.. do a search through this forum. You will find some samples too.. Also if You say which consoles You already have and which You are considering to buy.. it would be easier to answer. I only have CLC and VBC from alex, TubeConsoleBundle from aitb and Bogen from CDSoundmaster. I have fallen in love with CLC and it stays on my inserts all the time.. Also try Preamp Color Suite.. it`s even better than most console inputs. If it was bundled with CLC mixbus programs, I wouldn`t need anything more. Ok, maybe a little VNL on master heheheee... (seriously it`s great too!!).
You might consider which consoles/pre's are suitable for which instruments/sources. I like A*I on close miced drums and guitar cabs, but it doesn't always have to be that way. Find yourself a combination of which sounds most comfortable to you, or even make chains of different I/Os. I know this doesn't help, but trial and error works best usually.