OK, I have a hybrid with a straight bar. I'm actually pretty happy with it, going onto 7000 miles in a bit over 2 years, not much maintenance, etc. However, I'm thinking I might like to have some options for dropping down a bit, especially since I have headwinds on the way home fairly often, and I've been trying to increase my avg speed and have hit a wall at around 19 MPH with the upright posture.

I don't really want to go nuts refitting this thing; I'd like to keep the same shifters (twist grips) if possible, etc. So bolt-on aero bars would be good, full drops less so.

Any suggestions? What do people think about the effectiveness of putting aero bars as an add-on to straight bars on a hybrid? I suppose they could be moved to other bikes later too.

I should mention that I'm a cheap bastard, and fairly handy, a complex refit isn't necessarily a turnoff, but spending > $100 would be. I see Nashbar has a few options around $50. This one looks most versatile.