Thanks for the replies, guys!
I reckon I'm gonna go with a new bike, since the difference between new and second-hand is only about 350/400 euro. The YBR is about 50 euro cheaper than the CG125 too, so I think between it looking like a better bike and being cheaper, it's the YBR I'm gonna go with!
Good to know that the 07 model has the side stand, must have been an 06 one that I saw in the shop (didn't look at the plates).
I got a brief sit on the CG, and an even briefer sit on the YBR (although, I'm going to see another one closer to work tomorrow), and the two seemed almost identical. I like how the instruments on the YBR are laid out more though. Gonna see if I can persuade the guy in the shop to let me take it out for a spin, dunno how likely that is though.
Thanks again, guys!