I like my deep keel on my Bavaria 30, as said, appears to have better performance esp upwind. I do have to confess that I once in the early days forgot how deep it was (no excuses other than complacency, idiocy, lack of concentration etc etc) and found myself temporarily parked on Bramble Bank!
Suppose main deciding factor is where and what type of sailing you are going to do. I am not now in UK so tides, shallow waters are not a big issue and I have plenty of depth at anchorages.