Money, money, and money John. Just depends on how much you want to spend. The nice thing about a springer is cock, load, and shoot. If you just want to try out the PCP's then by all means go for the Disco. I spent a thousand dollars on a tuned Talon with all the fixings, and hand pump. I probably would be just as happy with a tuned Disco from Mac-1 or Mountain Air? I would love to buy Gene's BSA, but I still need a better scuba tank(4500 psi=$600). The Disco I have heard is pretty easy to hand pump(2000psi). My Talon on the other hand just gets harder after the 2000psi mark, and I still have another 1000 psi to go. Which is about 150 pump strokes with a lot of back pressure.
If I were to do it again. I would do the Mac-1 Disco with a hand pump, and make sure they go through the trigger. Good Luck. Keep us posted.
Dan L