I had a tippmann 98C as my first gun, i loved it for rec ball and it is great rec ball gun. If your site if using them in the first place just use them, the 98's are a nice gun to use in the woods. Dont bother buying any of the others for rec, just use the sites, the 98's are fine.
Then use your money on an ion with a few ups off the forums, they go for good prices on here even with a few ups on or maybe even more.
Now i have a PMR, and they are great little beasts, i love mine to bits, you wont be dissapointed with it if you end up getting it. But you need to take exactly what wenlock said into consideration too.