About two weeks ago I bought a used 20in. no-name uni for a mere $45. Being new to the whole uni scene I thought this was a good way to start. So I started practicing in a hallway in my apt complex clubhouse. After reading some posts it was recommended to start with a low seat height. After I was able to ride about 3-5 revolutions I thought, now is the time to raise the seat. Low and behold, there was only 1in. of seatpost engagement with no option to raise the seat. At that point i decided to give this uni to my girlfriend who is 5ft, and me being 6'1". I did some research and decided on the Torker 24" LX. I'm primarily going to use it for light muni and potential commuting. Is this a good uni to start with?
For light muni with no huge drops, the LX is perfect, its nice and light and can fit a tire up to 2.125 inches wide. For commuting its faster than walking, but you would get to your destination much quicker on a larger wheel, although it would not be as versatile as the 24".
You not only bought the right uni, you did it twice! You're very lucky to have gotten yourself a unicycling partner for only $45! Good luck to both you and your girlfriend...!