@Marc ********
that you can't see the benefit of getting an O-A visa from the thai consulate in your country BEFORE you wing your way here does not mean other people do not see the benefit of it.
Just a few of the benefits are, you don't need money banked or transferred into thailand instead you use your bank account in your country, you get unlimited entry/exit for the validity of the visa and every entry gets you stamped in for a whole new year. IF you work the bounce out and back correctly (by exitingre-entering just before the VISA expires you get another whole new year entry stamp in essense giving you TWO years of stay out of a visa that is good for only a single year. AND you don't deal with the immigration office here about anything but 90 day reporting..