Yamaha DTXpress/DTXplorer/DTXtreme

Hi folks, I'm a new member.  I've been reading the group for a while,
and just bought a used DTXP1 from a ebay, which I'm hoping was a good
deal. Part of the bargain was that the original KP-60 is dead, so I
need to get a new kick trigger.  Apparently you can order a new KP-60
from Yamaha for like $20.   Wondering: is it worth it?  I'm a novice
drummer of limited means and so I don't need super-hi fi equipment
yet, but I also don't want to have to replace the trigger after 3
weeks.  I wonder if they've re-engineered it so that the original
circuitry problems (which I've read a lot about here) are less severe?

Or should I just get a KP-65? Or a pintech vertikik from ebay? 

Any thoughts would be very much appreciated.

Thanks.