I've ridden both, and have a Stratus.
I don't suppose it matters much. Sometimes when I'm riding I think it would be nice to tilt back a little more. Other times, I like the position a whole lot.
Speed wise, I think both can be faired and socked. The Stratus seems about on a par with a df, but doesn't climb as well as say a Rocket or VRex (and the VRex & V2 are supposedly very similar speed-wise). Although, to be fair, I never spent much effort trying to unlock the secrets of fast climbing on a Stratus. I suspect practice and light wheels would make a huge difference.
If I was looking for pure speed I suppose the V2 has an edge. But if you're not already riding at 19-20+ mph (stopwatch & mile marker average) that shouldn't be a factor.
If you're looking for the more versatile bike, the Stratus gets the nod. Like the TE, it's been in production since the late 70's. This was the clincher for me. I figured a bike that had been in production for over 20 years had to have something going for it.