let us know how it performs if you do go ahead, I'm in two minds as I've read a few write ups that rate the standard valve at the same level as the forge...who know... 
Huh, are you serious?
The OEM valves are well known to be weak points.
Forge stuff is equally well known to be supremely top-notch stuff.
Yeah I read a detailed write up (link was posted on here somewhere), where a fella had tested both in depth against each other and found no real benefit to the forge valve, although I can't really remember if he was just testing the performance improvement, and not the reliability

. Personally I wouldn't know either way but I'm yet to be convinced its worth while. Besides I believe a stock DV is cheap to replace if it does go...?