Only had my x360key for about a month now, but no real issues at all.
Installation was easy on my phat with hitachi 78, only came with a cardboard wrap to protect from shorting so got plenty of electrical tape round that.
Already had the dvd key so didnt have to worry about getting that, but remember you do need it and reading via the x360key wasnt an option for me.
Setup with its ISOMenu option, only niggle was I didnt read the instructions and the JPG images must be smaller than 200MB. Once corrected all look fine and its OK but sometimes I still use its remote.
Did see some people having issues with 2.5 hard disks that drew power from the USB, but my had disk is an old 3.5 with external power supply.
Easy to use and does what I wanted, dont know about a comparison to wasabi but Im very happy with it.
I put the CFW on my PS3, but have since updated its firmware so no TruBlue for me