I had one of the early red-tops from about 1996-2006, with occaissional winching in the last 5 years. Needless to say, I was very satisfied with the life I got out of that battery. I replaced it with a Blue-Top with the light grey (deep cycle) case. So far it's working fine. I think the threaded mounts on the top are a lot more appropriate for heavy loads than the side posts on the Yellow-Top. However, the last time I looked on the optima site, the only battery they will warranty in a whinch application is the Yellow-Top, and only if the winch is hooked to the top posts. Right now, in the XJ I am using the Deka Intimidator 9A34M dual-purpose AGM battery that Bass-Pro Shops sells.
http://www.eastpenn-deka.com/default.aspx?pageid=163
http://www.eastpenn-deka.com/assets/base/1143.pdf
It's doing very well so far also