as much as i dislike them, for a stainless/synthetic rifle with a detachable mag in that caliber (.25-06) Tikka seems the logical choice. youll have a difficult time finding any other production rifle meeting those criteria. id normally recommend a Ruger, but i cant find one in .25-06. im even having a hard time finding a stainless/synthetic Savage in .25-06.
the fact that they just dropped the price on Tikkas by $100 makes them even more appealing. as much as i hate to say it, given your criteria the Tikka T3 is the logical choice.
alternately, if you want a better rifle look at the Ruger Hawkeyes. controlled feed Mauser 98 inspired design with a much better bolt/extractor, and include what is IMO the best mainstream scope mounting system on the market (integrated base/QR ringmounts). theyll save you at least $100 on your rings/bases... so at $644 the Ruger Hawkeye is a great deal. they dont come in .25-06 -- however they do come in .243 and .270 so it depends on how flexible your cartridge choice is. SIR mailorder has them and they are good to deal with.