Not an easy answer for that. Generally, I'd go for coins, after 100 collected you get extra life, that might help you survive first wave. What level you are at?
Best would be if you could upload the .cap.
Ok, yeah I guess some form of currency would be good. Although regular money would be just about useless, rare metals would still be valuable.
[quote:405awhao]What level you are at?
Hadn't thought about levels, but I would say I'm a novice collector.
Yeah I know.
Wonder if they're doing inoculations?