I have happily ridden my Specialized Sequoia (54 cm) for two great years, on flat territory here in Florida. No hills where I live. Finally time for an upgrade. Looking at carbon frames - after visiting several LBS, I have tried Specialized RUBY, Roubaix, Amira; Trek Madone (several models), Felt ZW6 (would prefer a 4). Going to try an Orbea Onix tomorrow. ANY ADVICE? I need help from anyone willing to offer help. I'm confused because I was originally "fitted" to a 54 cm, (I'm 5'4" tall), but recent fittings in the past few days place me on a women's specific 51 or less. HELP!!!!! I'm so confused!!!! My budget is up to $3500 with some flexibility for the PERFECT bike. I want distance with comfort. Not so interested in racing or tremendous speed.....