I was just about to purchase an X30 pump (being optimistic as far as what I can get to), then I saw there was x30x and x20x stuff like. What is the difference guys? Very new to this and willing to start but need more info and cant seem to find it.. I just want to spend it right the first time. Also hercules looked about the same. Should I just get that? thanks for any advise and sorry if its been covered, like I said I cant seem to find it. looking forward to this if you can help. good gains(good game?) for everyone!!!