I have a 2013 R3T that the build sheet said it had abs,but did not, look for a perforated disc Between the disc brake And the fork, that means you have abs.
Abs was an option in 2013 and I believe standard starting in 2014.
Other than that best bike I have owned, one small issue when new (intake backfire) that the dealer took care of with out issue.
I have put a new tune in her, (with the help of the fine people on this site) D&D pipes and a drop in kn air filter, the new tune really wakes her up, almost a totally different bike!
What ever model you choose you can't go wrong as far as performance, but their was some issues on some of the older (but not everyone had issues) models that may or may not have been corrected.
I would suggest to look for a newer model say 2009 an up, but if you find a deal on a older model with low miles or that have had the mechanical upgrades, go for it!
As much as I love my R3T, if I had to do it over again I would have bought a 2009 classic, best looking model they made to me!
Good luck and enjoy, and welcome to the club!!