There are a couple of folks on the forums who seem to have made it there mission in life to recommend the twisting off method in every single thread on the topic and they go out of their way to criticize desoldering the caps.
I've mostly been ignoring it, figuring folks can get the more reliable methods from the older threads, and I don't feel like having a war spread across dozens of threads. So I limit myself to stating that there are several available methods and different folks have different preferences.
However, the twist-off folks have been preaching their method as the one true method and that is extremely irritating and probably out right wrong.
Okay, grumpy-old-man mode off.
You can always order the tantalum caps from me. You're really not saving any money going with Mouser or Digi-Key at the prices you're qouting here. The only advantage is that Mouser and Digi-Key have on-line ordering forms and one must actually type a message or two to order from me -- although I'd respond fine to a simple PayPal payment with shipping address and a list of capacitors.