I would also recommend getting a 24 instead of a 20.
I’d get one of the Nimbus 24’s w/ 170 cranks at first, to make it easier to ride and less scary UPD’s, until you get used to them, then upgrade to shorter ones when the 170’s are too slow. If you’re gust riding it around town, you’ll eventually want to put on 125 or smaller cranks.
Nimbus X - hub and cranks aren’t that strong, but will be fine for riding off curbs and hopping up/down stairs.
Nimbus II (red . blue) - STRONG hub, more clearance for wide knobby tires, optional really strong cranks. Muni - similar as above, but comes w/ a knobby tire, metal pinned pedals, and a better, stronger rim for off road. http://www.unicycle.com/shopping/shopexd.asp?id=765 - super strong and comes w/ mounts for hydraulic brakes but is heavy, not as upgradeable and the Nimbus Muni has a better rim.
My vote? Get the Nimbus Muni w/ 170 stock cranks and upgrade to a KH Fusion Freeride saddle + a road tire (and shorter cranks, or get them later).
Buy this thing, then put on a pair of 13 $ oddessy twisted plastic pedals.
Great around the town have fun riding uni. For less then 200 $ delivered.
The 150 mm cranks that come stock with this uni are the most popular size. If you want to try another crank size, ISIS cranks are 80 $ /pair. Cotterless square hub cranks are many times less $. 10- 20 $/pair.
UDC is a great company, with the best selection, but their shipping charges are really high $ .
Actually, they aren’t that expensive compared to most cars. The check I wrote for that was less than 13 grand. But after spending that much, it’s going to take awhile to build my account back up. I need to keep costs down but still get something good if possible.