I don't care for the tiny tires on scooters. Local dealer had a bunch of used ones in from a delivery service company that was redoing their fleet and we thought about it. 150 CC's but that'd mean having to pay yearly tax on it. The darling wife picked up a Honda Biz 100CC rig (thanks to the guys on
http://www.sixshootercommunity.com) and I picked up this one:
2005 Suzuki GN125H 87.5 MPG and 63.75 MPH on a recent trip to Cali. That's top speed on the MPH by the way, as registered by the GPS trip meter. I think I got that on a downhill with a tailwind. Average speed for the trip was closer to 45 mph, but a lot of it was through various towns and on hills - which the 12 Shetland ponies of power it has don't handle very well at top speed.

But it's got 16 inch rims and handles about any kind of terrain I face down here. It's too small for long trips with two people, but does OK around town for running errands and such. The mileage is from the same trip, it can do better but not with the accelerator cranked clear to the stop 99% of the time...
The best part is - it ALMOST looks "manly" to ride... I'll be taking it to Bogotá in a few weeks, the Good Lord willing. About a seven hour trip (at least that's what it took me last time) I'd prefer a 250, but 125's don't pay taxes here and 250's cost more than double. In fact, a GS 500 wouldn't cost but about $500 or so more than a 250 would - and provide much more oomph on the uphills as well.