anybody use airtreks? Other 'round the world ticket options

[Kiva]

Hi folks

I'm trying to book an around-the-world ticket..CA, .Italy, Turkey, Thailand, CA...lots of good reviews for airtreks.com. Anybody use them before? My travel agent gave me some obscene quote and the airtreks quote is significantly lower.

I've also heard there are ways of manipulating the 'round-the-world tickets so you don't have to always travel the same direction, etc. Anybody have any good knowledge in this area?

thanks

kiva