ps2 and ps3 => xbox360 controler convertor

I have one quick but fairly important question:
Do you have any experience with some good, lag-free convertor for ps2 and ps3 controllers (I need one convertor for each) which will allow me to use them on Xbox360?

It is because here in my country, we are all playing FGs on PS3... but when we are going to foregin tournaments, a lot of them are hold on xbox360. What basically mean we are not able to participate without buying new sticks, what kinda sucks. So I am trying to find alternative solution...

Any tips?

 

PS2 => 360
http://etokki.com/Xbox360/Xtokki360
price is decent and a member of the Italian FGs community said it's lagLESS.

 

Found this by accident... should be great, after the firmware gets updated

http://iplaywinner.com/news/2012/10/22/review-cronus-device-part-1-xbox-360-to-playstation-3.html

 

eTokki is ran by Laugh in Korea, an outstanding Street Fighter x Tekken player, and purveyor of Korean arcade gear.

Both the inPin PS3 Converter and the XTokki 360 converter for PS/PS2 controllers are the best available anywhere for reliability, compatibility with many setups and lagless response. Here in Halifax, NS, Canada, we sometimes we have issues with them if there are extension USB cables being used (the venue here runs on projectors, where the console is sitting some 25 ft away, cable runs down from the ceiling). Outside of that both are top notch. Hell, I even went so far and found an older Logitech PS2 Wireless controller, and used it with a converter for PS3 play and could still hold my own in MvC3.

You can be assured you won't be disappointed.