I have first hand experience with a Leapfrog Creatr (about 2 years old, I use it every week). I use the newest update of Repetier host 1.06 (and not the 0.9 Leapfrog one).
The quality of the machine itself looks good, however when you open up some panels you can see the machine is made in eastern europe. The finish is just not really what I expected.
Non the less the machine performs very well and has a great buildsize. There are not a lot of things that I can’t print on the machine. Till now the machine is working ok.
The most problems I have with the print quality are with prints not sticking to the printbed when printing ABS, even when using the supplied stickers from leapfrog and making sure the printbed is completely level. I now used 3Dlac which works like a charm.
Printing in PLA is no problem, however the print quality depends for a large part on the brand and type of filament u use. For instance I made an pin using glow-in-the-dark filament which looked like crap, when I printed this pin in red filament on the same settings, it came out very smooth.
So you will need to take your time and experiment with different settings, filaments and preparations, but this is not very different from most of the other printers out there.
Overall advice
Overall I’m happy with the device, you just have to be innovative and try different things/settings.
Use Kapton tape with a sprayed on layer of 3Dlac and you shouldn’t have any problems with prints coming off.
Also check out http://creatrtips.freeforums.org/ 10 which has a lot of people who have a creatr and try to improve theirs.