Xbox 360 to ps3 controller adapters... are they any good?

DealExtreme: $16.50 XBox 360 to PS3 USB Wired Controller Adapter Converter (100CM-Cable)

XCM Cross Battle Adapter 2.0 for Sony PS3 Xbox 360 NEW - eBay (item 250520672948 end time Sep-22-10 00:06:13 PDT)

Anyone had any experience with these? Do they lag?

P.S. Search function wasn’t helping too much. Sorry if this has already been discussed.

No good

http://shoryuken.com/f177/converter-compatibility-thread-181187/

Thanks for the link, but that thread seemed to have pretty dated info. I’ll look into it more, though.