DynoPort vs F&/Phantom

i got a phantom model f7. it gives a lot of top end. here ill post this about the phantom on pb's website
Factory 7 Exhaust (previously known as Phantom Performance):

Note: All colored silencers are made when the order is placed. Expect most pipes to ship within 72 hours.

ALL PIPES WILL COME WITH THE NEW FACTORY 7 DECALS!

Tested and proven to be one of the best Yamaha Blaster pipes on the market.
Delivers power in all areas, not just top or bottom.
Chrome pipe that comes in a variety of silencer colors.
This is the pipe that you've heard about! Now here's your chance to own it.
 
I don't really have a say in this because I've owned neither, but I would probably choose the Dynoport. Also, check out the "pipe review" thread in this section it's got a lot of great info.
 
I don't think you'd be happy with a dyno port high volume if you're looking for a mid-top pipe. The high volume works good for mx style rpm's. You'd probably be happier with a dyno port mid-top pipe. The f7 has more top end the a high volume, imo