it is going to be awhile until bluetooth is adopted as an official standard, thus bringing all mouse makers into the bluetooth game. the only "nice" BT mice are made by M$ and Logitech. Radtech, MacAlly, etc...pfah! garbage.
your best bet, buy a cheap RF wireless mouse for the moment, and pray a nice OS X BT Mouse is released (all BT mice work with OS X, but are not customizable via drivers available from their respective companies, thus you only get basic left, right, scroll functionality). this is unfortunately my only option currently. Why Logitech designed their new Laser Mouse around RF wireless is beyond me...those @$$holes...
there is no good traveling mouse. apple has an off switch, but 1 button. M$ and Logitech have nice mice, but no off switch. MacAlly has two buttons and an off switch, but their mouse looks like my PBook was constipated and finally pushed out a load, that being the MacAlly mouse.
basically, if you're a pioneer and looking to get into the world of input devices, you could make a KILLING if you developed a stylish, multi-button, scroll wheel, blue tooth mouse. apparently nobody is capable of meeting these requirements however (apple was close, but then decided to flush their mouse down the toilet with 1 button...fools...).