I think this idea has kind of been covered before, maybe in the individual member threads. But it might be nice to discuss it all together.
Each Genesis member has gone through different eras of instruments they used (and the associated set-ups). For each member, which ones are your favourites? For me it is the following:
Peter - not really something I can comment on as he really only had the flute and some assorted percussion.
Phil - although his Lamb kit had great variety and I loved the high toms on the 3SL tour, I think my favourite kit and sound he achieved was on the We Can't Dance album and subsequent tour. The toms were great and he had a fabulous snare sound.
Mike - from the bass standpoint, I'm a sucker for his Rickenbacker days. For 12-string, I really like the Rickenbacker sound on the We Can't Dance tour. For 6-string I have not been a fan of his sound much overall, so perhaps the Duke era would be the best.
Tony - this is tough as I prefer his Hammond and mellotron from the earlier days and I really like the Quadra from later (I'm don't think these overlapped). So perhaps I will go with the ATTW3 tour, where he had the Hammond, the mellotron, and a Pro Soloist I think.
Steve - also a bit of a toss up. He is definitely the best on the Les Paul, but then I both really like the raunch of the Genesis Live era and the pure tone and sustain of SEBtP era.
I can't comment at all on Ant or others, so perhaps some of you will.