Yeah a mono will be fine, you don't even need to service it that often (every 4 months or so, every month if you want to run WD40 / GT85 in it), and they're easy to do.
I had no problems with my mono at all.
However i have recently upgraded to a King Classic with steel driveshell, HD axle, fun bolts and trials spring (sorry, had to brag >_< ) And i can tell the difference, can't tell enough difference to justify the price i paid though lol.