I agree, (although its the only one I've tried)
The LYRA KB adaptor works great and 'Redrumloa's
price is good. I payed more a Software Hut.
Also I bought my mouse adaptor at Software hut.
I can't remember the exact name of it right now
but it was kind of like a 'Polish' name, you'll
know it when you see it. I have an optical mouse
and wouldn't go back to a ball mouse.