I have a Bianchi Pista and a road bike. Not sure that the road bike is "aggressive" but it is a standard drop-bar geared road bike.

The Pista is used for fun and enjoyment, mostly rides <20 miles at lunchtime. I work from home and have a variety of 12, 15 and 17 mile routes that I can do from the house in an hour or so. I'll ride it maybe three days during the week and occasionally for rides up to 40 miles in the country on weekends or at night with lights.

The Pista is set up 48/16 fixed and I ride it to help with cadence and build strength - it is somewhat hilly where I ride. It has made me a better climber and I'm not as inclined (no pun intended) to coast through turns or downhill on my road bike as I was before I started riding fixed. It is a bit more of an intense workout - generally a bit higher average heart rate and more effort than the road bike for any given climb.

It's also cool. Ain't gonna lie. Everyone asks about it when they see it.

@Inpd, you mention single speed and not fixed. I would encourage you to try fixed if you are not doing it now. Riding fixed is different from a bike with a freewheel. The difference is difficult to describe. Physically the muscles don't have a chance to relax and are held in tension all the time. Psychologically, one doesn't ride a fixed gear bike as much as one cooperates with it.


-Tim-