Kentala,
This one has approx 54.5 top tube.What's yours got.Oddly enough I've seen some 52's with top tubes of 53-55,so there ain't a lot in it really,and now I've pushed the seat forward a couple CM,I'll prolly stick with the 54.The fit calc put me on at least a 54 anyway.The 52 did look like a bike for 10 year olds