Andy, go to www.airsoftcanada.com and go to their forums. Here you are asking questions to a small group of people, on airsoft canada you are asking thousands of people. You just surf the forums for topics related to your question. if its not there then post your question. there are several threads there related to your question.

the KSC G19 apparently is a wicked glock to use. one of the best and not too pricey either.