Best performing/value SSD or duo, at 40-100GB?

[jalyst]

The best in this capacity range atm is the OWC Mercury Extreme 50GB SSD right?
I'm aware it's $/GB is much higher than Indilinx & Postville based MLC's...

Considering it's $/GB is high, & if I want similar performance...
Then perhaps I should be looking at the X25-M, 2x X25-V's, or 2x Vertex 30GB (or similar)?

Then again I could always get one Mercury now and a 2nd one in 6mth....

It's for:
Ubuntu (stripped down) + MythTV (FE+BE) + XBMC/Boxee + Windows 7 MCE.
Pretty sure 25GB should be enough for all the *nix stuff, but not sure if 23GB will be enough "wiggle room" for Win7 & media apps.

There's a real dearth of forum debate/review surrounding OWC mercury.
I still have a few concerns about the maturity of it's firmware....