Yamaha DTXpress/DTXplorer/DTXtreme

Dear all,

I may be making the plunge to purchase the DTXpress, but am wondering
about a 1yr extended warranty.  Any feedback, pro or con, about this? 
Have any of you who have purchased the DTXpress new had component
failures within the first year?  Any of you kicking yourself because you
wish you would have purchased the extended warranty.  Anyone feel like
they wasted their money in buying the extended warranty?

Thanks,
Stephen