the FP has 6100 frets and the VWH 6105's, neither is more durable, just a different shape. The 6100 is a jumbo wide, while the 6105, is a jumbo, but it's taller and narrower.
Stainless frets are fine, but other than a Parker, I don't know of any guitars that come with them. Also, some people don't like the feel of them, and, they are not available in the 6105, or 6100 shape, I've looked. Plus, you need to then get your axe refretted, and a refret with SS frets will be probably double what a regular fret job is.