For good discussions by owners, check out genesisowners.com.
You'll find quite a bit of reliability and repair record information on the Genesis on our site. There have been a few common problems with things like the power adjustments for the steering column. A very good used car for the money overall.
My main problem with it: the 2015 and up second-generation Genesis is a much better, truly outstanding car. Used 2015s are currently around $30k, but in the next year or so I bet you could get one for $25k. If you can wait until one is within your budget, that's what I'd do.