If you already drive manual, then get the manual CX5: same great shifter that is common among Mazdas nowadays and total control over which gear you are in. I don't find it to be slow at all <for a crossover>; in fact I think its kind of like driving a Miata in the sense that it rewards good driving with a great experience.
oh, and what Nodnerb said is correct, the 1-3 gears are geared for acceleration (3rd is still 1.3:1 I think) with 4th being the closest to 1:1 gearing, 5th still geared a bit low (can drive in 5th at 40mph in city) and 6th gear is straight-up overdrive for highway.