I would go with a b+w as well. All the mount widths should be fine. The F-pro is cheapest and the XS-pro is the newest with nano tech coating to repel water better. Make sure to get a MRC (Multicoating).
If I were you I would buy: http://www.bhphotovideo.com/c/product/756819-REG/B_W_66_1066112_82mm_XS_Pro_NANO_Clear.html
Since you are putting it on a 2000+ dollar lens, get a good filter. This is a clear filter and one of b+w bests with MRC, slim and nano. At 126, I find it a very acceptable price. I use this on my 16-35mm and I notice no vignetting so you definitely shouldn't get any.
BTW, you dont have to get a UV since you use a digital camera. Clear will work just as well.