Thank you all for the responses. I haven't had a chance to check in on the thread since the posting. You have all given me alot to think about and I appreciate the various points of view.
It sounds like the best thing to do is have frank discussion with the GM and with the other players. If things remain the same I'll likely use retraining rules to shift build choices in favor getting additional re-rolls rather than static bonuses. I still enjoy the group and enjoy playing with them most of the time.
As stated in the OP I'm not sure how many other players are bothered by this practice so it is possible that I am not the only player who doesn't like this practice.
I'd like to point out a few things that varied during the thread that may not have been clear at first.
-The DC's are not raised all the time just when the GM wants it to be a slim chance This may result in only one scene per level (usually crucial story points involving things of custom design like BBEG, custom room environment; and has been applied to: Disable Device, Caster level Check, or Hardness Break DC etc)
-The GM is not Floating DCs for every player independently, the DC's are raised to the Best mod+15.
-This practice is not a secret. However It was not disclosed before the game began. It was implemented during the course of the campaign. I suspect, as a response to players specializing in specific tasks and achieving numbers clearly above the normal range. However the GM made no attempt to keep it secret from the players after they figured it out and asked the GM directly.
-I still don't support this position as it ignores all character build choices. Choices that were made by the player to benefit them.
Thanks again for for your responses, there are several perspectives on closely related topics I had not considered.