With a 30" inseam (assuming it's been measured correctly), a 22" or a 23" frame will be waay too big. I have an 81cm inseam, and although I'm the same height as you, I should be riding a bigger frame than you. I ride a 53cm frame (measured from centre-centre) along the seat tube, but I can get away with a frame up to 55cm before it starts feeling too weird. I agree with suggestions that you should try out a few bikes to get a feel for size, but modern bikes no longer have a standard way of measuring size, so one brand's 52cm frame can be bigger than another brand's 56cm frame, so unless you are riding a bike with traditional geometry, then there is a chance you could be confused. I'd be inclined to compare each bike's "effective top tube" measurement for the purposes of appraising modern frames, and using that as the benchmark for deciding what is best. It's a guess but I'm thinking you've got a long torso and would probably want around 56cm effective top tube, and maybe a 52cm seat tube in traditional geometry.