There are actually a few good reasons why to get a Xeno 360 instead of an NME v1.2.
- it was cheaper (when I bought it)
- its WAY easier to install on a Hitachi (6 wires required for Xeno360 vs 11 wire required for NME v1.2!)
- it didn't have any "non-working" problems (although the NME's are easy to fix, remove 470 and bridge with solder = done!)
- you lose the auto-detect feature of NME v1.2 when you remove 470 coil
- Xenos are made from Actel, one of the best chip makers vs NME made by

who knows, I never saw a chip brand name on the ones I installed! (only NME V1.2 Team Underdog was on the chips, or something to that effect)
Those reasons were enough for me to get it (I had a Hitachi 78, and also installed for others who had various Hitachi models such as 46, 47 & 59)
If you had a Samsung drive, I would have gotten the NME v1.2, as I did for a few others who had Samsung drives.
But it seems the NME v1.2 have been discontinued...so the only one left is the Xeno 360, or the earlier NME chips such as V1.0 or 1.1 (but they have software problems like Media Detection, dvd burner support, ect.)