I found my stock LX to be reasonably perky, but with 285s and lots of heavy accessories it has really slowed down. It isn't exactly a pig, but it is more of land yacht. At high altitude with a little trailer it definitely takes its time getting up those passes.
You know the Mazda "Zoom zoom" campaign? I have been thinking about buying three stickers and cutting them up to make one sticker for my bumper: