In th big scheme of things, most modern SSDs in R0 do fine with no TRIM. It's nice to have, but I'm not giving up my 2600K OC and spending a ton of money to get it. IB gives me nothing over my current SB setup.
Haswell will be here in April. That's when I upgrade.
Honestly, I'd wait for Haswell, but you haven't told us your current setup. What do you currently have?