i am gonna get a boost gauge soon for my 06 STI but i cant decide what brand to get or which one to get ??? what do you guys think ??? i was thinkin the OEM Subaru one but it only goes to 15lbs right ??

The OEM Lamco gauge is calibrated in MPa not PSI. It goes to .15 MPa which is about 21 PSI.
It's a bit overpriced though if you buy one new, however if you look in the Private Classifieds there are usually a few used ones for sale at decent prices.
There are also plenty of aftermarket alternatives, take a look through the Interior section of the Vendor Classifieds.

kinda depends on how much money you wanna spend.

if you think the oem gauge is overpriced I would recomend prosport gauges.

They are well liked here on the forums. I have there manual boost gauge myself and I love it.

for price/quality there hard to beat really.

I have the Prosport electrical boost gauge but I can not tell you anything else about it as I am just now getting ready to go intstall it. It is a nice looking piece and a decent price though. In fact my Subiegal gauge pod cost more than the gauge.

DEFI BF'S:banana:

^^yes

Prosport manual has been good to me and my wallet.