Head pipe options

I'm using the two brothers slip ons and i want to change my head pipe. The options are the FMF power bomb, delta torq and the pro circuit which they sell on ebay. So far the FMF is the most expensive, the only thing i don't like about the bomb is i find it to bulky. Delta has the most reasonable price and it looks some what like the pro circuit head pipe, smaller diameter and tapers to a bigger diameter going to the silencer. If i change the head pipe, aside from making it looking pretty and lessens the weight. How much power will it gain? Will you really feel the difference? I'm thinking of getting delta torq because of the reasonable price tag and there good name. But has anybody out there tried this head pipe? Any reviews?

I don't think pro circuit makes anything for the wr250x/r.
The one on ebay says for a wr250r but also says for an 07.

I have the FMF power bomb and muffler, the powerbomb was backordered a few days when I ordered so I rode a couple days with just the FMF muffler and stock header. when I put the power bomb on a few days later I did notice a slight change but not a whole lot. I have no experience with any others.

mattf wrote:

I have the FMF power bomb and muffler, the powerbomb was backordered a few days when I ordered so I rode a couple days with just the FMF muffler and stock header. when I put the power bomb on a few days later I did notice a slight change but not a whole lot. I have no experience with any others.

Thanks for the info, ill try out delta then.