@Adam ***************
, okay, just so you're clear, whether you switched passports or not, the thai immigration system will match against your surname, DOB, sex, and country of origin. They'll be able to see EVERY entry you've ever made to thailand going back as far as they wanna look.
As far as saying will you have a problem on your next entry, no one can say one way or the other whether you'll skate right thru passport control or get pulled aside and questioned.
All you can do is hope for the best and have the 3-proof-ofz;
proof of 20K baht or the equivalent in CASH
proof of onward travel
proof of confirmed lodging or hotel