thanks for all you guys' input on this.  it's really amazing!!! and your input is really helpful to me. especially i'm such a newbie on cryptocurrency.

just few more questions raised to my mind -
1) seems some ppl use poloniex, some others use bittrex.  is there really any difference using either of them? or it's just a personal taste
2) if i purchase the license from a reseller (0.09B), i can still get all the official support from gunthy, am i right?
3) which VPS provider you guys used?

thanks in advance!!
airok