If you have a high multiplier (not sure what the 3700+ has) and a decent board than it might be worth it. If you plan on mostly benching than probably yes. If you plan on gaming with it I'd say probably not.
I was going to get some of the VX until I started thinking about pumping 3.3-3.5V through it 24/7. Even with active cooling that's a little scary. You could just lower the voltage for everyday stuff and raise it again when you need the performance, but than you still have 3.3-3.5V running through your ram for long periods (I don't know about you but some of our lan parties go for 10+ hours) and with the DFI board you have to shift a jumper over to enable voltage over 3.2V. So if you switch the jumper over to get the higher voltage capabilites you can lower the voltage back down for everyday use but than the mosfets absorb the extra voltage and can heat up pretty quickly. Than you're stuck switching the jumper over everytime you want to lower the voltage. Not a huge deal but kind of a pain. I'm not sure how it works with the OCZ Booster, maybe it's less of a hassle.
Personally, I think TCCD ram is the way to go unless you are on a serious budget. You can find good ram with the brainpower pcb's for ~$225. That would save you $45 over the PC4000 VX or $85 if you have to buy the Booster with it.
I also highly recommend the Ballistix ram. Mine will do 2.5-2-2-7@250MHz. That's dang near what OCZ VX will do and at only 2.9V.