rgb - I've had some of the standard Drake Edition motors expire kinda quickly compared to some of the italian motors. I can usually get about 2-3 gallons through them before they start to run low on compression.
Punched - They're the same engine. The "Draked" edition engines are blue-printed, ported, sealed, and checked by Adam in his garage...I'm not kidding! In my opinion, they're worth the extra money.
Aaron Waldron - LiveRC