I just purchased a 2011 GSX-R750. The 600 version has an identical chassis. I am a 5' 10" 165 lbs dude with a 31" inseam. Most sport bikes are too tall for me, but I found the GSX-R to have many features that make it a good fit for average height or short people. I thought this might be of interest to female riders.
1. Low seat height. For years the GSX-R series has had low seat heights. I have found that you can't always trust published a seat height because it depends on many factors such as geometry, seat cushion firmness, seat width/bevel, and suspension setting. You have to go to a show room and try the fit. A low seat is especially helpful at stop lights and backing up into parking spaces. The 2011 GSX-R has a significantly lower seat height than other sport bikes, so that you feel like you are sitting in the bike, not perched on top of it. I can stand flat footed with both feet wearing thin soled shoes. Backing up is so very easy. The low seat has the added benefit of taking weight off the wrists. On a ZX-6R or R6 I feel like I am doing a constant push up. The GSX-R is less exhausting and allows finer control of the steering.
2. Fully adjustable suspension. The stock settings on my 750 seemed to be set up for a 200 lbs person; too firm on bumps. However, I was able to easily dial down the front and rear preload and damping to adjust for my lighter weight. The preload collar for the rear shock is the easiest to reach of any bike I have owned. With the proper toothed tool, I dialed it back 1 full turn. Because of the geometry, this minor adjustment lowered the seat height even more. To maintain the same steering geometry, I dialed back the fork preload on each side 1/4 turn. I dialed back the front and rear damping adjusters 1/4 turn. The bike feels much better, the seat is lower than stock, and the handling is superb.
3. Adjustable foot pegs. The foot pegs/foot controls can be relocated to any of three set positions.
4. Ample fore-aft movement. You can scoot forward or back depending on your torso length. The seat is flat on top so you are not locked in place. The reach to the bars is very reasonable.
5. The clutch and front brake levers are adjustable for those with short fingers. Both have low effort pulls. New Brembo brakes are easy to modulate.
6. A/B power modes. The power can be switched to a lower B mode on the fly. This is helpful if you are new to the bike, riding on poor roads, trying an unfamiliar curvy road, or must ride in the rain.
7. Saddle bag capable. The tail section and standard exhaust position allow the addition of saddle bags, unlike many sport bikes. I added Chase Harper Stealth saddle bags that add over 30 liters of cargo volume. I mention this because my wife cannot go anywhere without her purse, so I thought this might be another female bonus feature.
8. Smooth low end power. The extra displacement of the 750 makes it easy to maneuver in traffic and parking lots due to the nice off idle power. Instead of being barking mad all the time it can be quite docile when you need it to be. It is not picky in regard to gear selection at any speed, as the strong engine can cope.
9. Light weight. They eliminated 18 lbs from the bike this year which makes a significant difference at low speed and parking situations. The weight is very centralized, making it feel even lighter.
10. My wife likes the color scheme which matches Vanderkitten's female bicycle racing team. The 600 has white wheel rims which would be a pain to keep nice looking. Yet another reason to go for the 750 which only costs $400 more.