Well, I want to thank you guys for all the help. I chose OnePass, but mainly flying NW. I just hit Silver last week and I have a 100% upgrade rate ( just 7/7 ) but I think it's still good. I'm very happy with OnePass. The customer service is very good. Just before I hit Elite (I was 6 segment short) I called OP and spoke to the supervisor who asked me to fax her some boarding passes for the flights that havent posted and that she would upgrade my account to Silver. Well, 3 hours later I was Silver. Today I'll hit Silver by flying
Anyway, I'll start flying internationally by the end of the year (at least once every two months) and mostly to Poland (we just opened an office in there) so I'll be mostly on KLM and NW. I've not checked yet If CO has codeshare on AMS-WAW with KLM but I hope it does.
Gold? Well, I don't think it will be a problem this year. Next year - Platinum ?
Damian