Gotta love DW weapons. Go for it.
Check it for timing (the only problem mine ever had). Also, be careful of the vented compensated versions. Though they make for an awsome light-show, some people have had problems with grunge build-up inside of the shroud, making disassembly nearly impossible.
Other than that, my 744VH is the most accurate, reliable revolver I've ever shot. It is built like a tank, loves full-power loads, and soaks up much of the recoil with its weight. Remember, this beast was designed to stand up to silhouette shooting, delivering excellent accuracy with full-power heavy-bullet loads, and lots of 'em.
The removable barrel makes for easy cleaning without the wear-and-tear that cleaning from the muzzle inflicts on the critical crown surface.
Plan on getting Pachmayer or other soft grips. The wood ones are a little rough on the hands.
Buy one.
PS- who cares about resale? This baby's goin' nowhere!