Leave this thread up long enough, and you'll eventually get everybody recommending pretty much every single high-end frame available.
Most the people that will suggest X frame over Y frame, and just giving you their personal opinion also, and have no first hand experience owning/riding the bike. So, you might as well just get what YOU like the most.
Agreed. It's unlikely that you will find anyone who has ridden all three frames you are considering, and even if you did, that would just be one person's opinion, and we all know that one bike that is loved by one rider is not necessarily going be be loved by another rider.
I have the R5 VWD and think it is a truly amazing frame - stiff as hell where it needs to be, maintains comfort for the long haul, crisp handling but also very stable at speed and a breeze no-handed, light as just about any WW would demand, and (I have saved the best for last) descends like no other bike I have ridden - this frame it truly confidence inspiring. Slap on a pair of low-profile wheels (I run Zipp 101s for training) and 25's (I run GP4000S) and it's an unfair advantage on the descents.
On relatively flat solo rides or breakaway efforts it's not as slippery as an aero frame, but that's about it's only downside IMHO. Of course, I haven't ridden the other frames, so perhaps I would be even more impressed with them if given the chance to ride them.