Honestly, the Axe-FX II Original serves myself well with FW 18.12. All technology and guitar gear becomes obsolete at some point. Fortunately for us, Cliff and FAS have still committed to having updates that come out for all supported models for now. When you hear the quality of FW 18 though, you will want to sell your 11R.
There's always a chance of "diminished return" as far as updates and latest technologies. Look at the iPhone 6... It's a bigger screen and does everything I need it to. That "next" feature that Apple will slam in everyone's face to "need" will be a joke to me and a "requirement" to someone else. It's inevitable that at some point, we have to be content or contented. I am finding this out the more I play with FW 18. FW 19 is going to be just THAT much better!
I hope that helps. If it's a steal and also if they have an MFC-101 with it, go for it. I have the II Original with a Mark II MFC that I basically got for free with mine and it has served me well for 1 1/2 years. It literally replaced all of my guitar gear.