I bought a 24-105mm F/4L, and T1i refurb. Both arrived in like-new condition, but I also don't have either one any more, and that's worth pointing out.

I was one of the few here who didn't like the 24-105mm, finding it a bit soft. Not sure if it was normal copy-to-copy variation, or typical for a crop sensor user, but I wasn't happy with it. I have no idea if it ended up being refurb because somebody else found it soft and returned it, or if I'm just picky.

My T1i always seemed fine, but AI Servo couldn't keep up with the dogs, and so we upgraded to a 7D. While this did give a boost to tracking, the 7D was also surprisingly much sharper. I'm not sure if that was due to advancements like micro-lenses on the sensor, or if my particular T1i happened to be softer than usual, so once again, I'm not sure if my experience is typical for a T1i to 7D switch, or if the refurb T1i was unusually soft.

These doubts have prevented me from buying any more refurb gear.

As for the warranty, is that new? Canon and partners used to offer only 90 day warranties on refurbs, with Adorama being the exception, offering a full year on Canon-refurbished products.