I like and use Deep V's. 20,000+ miles on my last one. I built it so it got lots of TLC during the build. Only small true after 13,000 miles.
At my weight, 240+/- a few, I don't worry a bit about a little extra rotational weight. I do lots of climbing and the only thing that slows me down is me! If I have a sucky day , it aint the rims.
My wife rode Bontrager Lites for 3 years till it wore out. I put a Deep V on the rear and she said, "wow, this is one stiff wheel, it makes the other wheel feel wimpy". I myself think it's stiff but I like the responsiveness while climbing. Like she says, other wheels have felt wimpy and flexy under me. So a little extra weight is not a bad thing IMO if the wheel responds.
I've seen the equiv in the DT but $85 when I can get a Deep V for $55? I've never had a need to try a DT rim.
She's got a Deep V and she aint afraid to use it! On the flats or in the mountains!