1: Bare Nexgen drysuit. It's the cheapest suit you can get, but fantastic value. Folds compact for travel, not hot if I don't wear much underneath, rear entry very practical with good shoulder mobility. Everything I need, nothing I don't.
2: Spare Air. Has a bad reputation around here due to very limited capacity, but it's just such a handy product! Bottle, valve, 1st stage, gauge, 2nd stage, all in one compact little package, always on, no hoses flopping. It even comes with it's own fill station.
3: Air2 inflator / octo combo. Why have both, with two hoses, when they could be the same unit? I have to donate my primary to my buddy if he needs it, and take it out of my mouth to dump air from the BC, but those are both acceptable compromises. It seems like such an obvious idea, and the Scubapro product happens to be super nice in both roles.