whenever I purchased an X45 i also picked up a service warranty. They wear out in less than a year but with the warranty, wasn't an issue. I just popped into my local ComUSA and exchanged it, picking up another serive warranty for another $10 at the same time...
This has worked well for about the last 4/5 years but the last time my tigger went flaky in my X45 about 2 weeks ago, when I stopped into the CompUSA to exchange it, all they had were X52's. Got $80 credit towards a new X52 and have been fighting it since...
that is my experience, yours maybe total opposite as many others love the thing
gl