ilikeeggs

I started out with the MXT100.  Great little radio.  Now you can get them cheap on ebay.  I bought the MXT400 as soon as they were available.  40 watts is nice and it's FCC approved.  I agree with buying used.  You don't really know if there are any problems or not with the radio.  IF the radio is cheap enough then maybe it's worth a risk.  One thing I enjoy with Midland is their warranty.  There is a one year on the MXT400.  I recently returned a GXT5000, three years into a five year warranty and they send me a brand new one. 
Whatever you go with, make sure that you get a decent antenna.The magnetic mounts are good in a pinch but won't let you use the full potential of your radio.  If possible, get an NMO mount and get an antenna that you can trim to GMRS frequencies.  Tram, Comet, Larsen all make good ones..  Some people have their preferences.  They are all reasonably priced too.  Check ebay.

I just received my Laird BB4503 for GMRS. (all black version, B4503 is stainless look). I found it on Sears website after a search. $33 bucks, shipping included. NMO mount. They shipped it through a third party but who cares? Tuning cut lengths were printed on the package.