Lobo2k I'm also a newbie in a similar situation and about to start my collection. Here's what I've noticed doing some pretty heavy research this past week:
-Some newer used pins -are- being sold at or over MSRP, but most aren't. And seeing as used selling for more than new generally defies logic, I don't think that's a sustainable market. I think if you remove yourself from the hype and ask yourself what you're really getting compared to what's available you can avoid any potential price bubble.
-I think the new games look awesome but there are too many great used games to just default to a sweet New Premium. Like everyone else said: get out and play a ton. I've played the new Iron Maiden: Legacy of the Beast (Pro) and I'd rather play a 1994 World Cup Soccer . Everyone's tastes are so different!
A big ah-ha for me has been maintenance. As a newbie it's not obvious how much work goes into just keeping things running let alone tweaked to run smooth. I have three of Blake 's pins stored at my house and I can see how the gameplay is changing over even a few months. Make sure you have a plan for that. Good luck and have fun!