[Arakon]

the messiah is not any harder to install than the origa. the laser problem is the same with ALL chips, the v3 is the oldest pal machine, and the laser is often worn out some already. the chip will still work fine, the only difference is that dvd-r MIGHT not work properly.
also, the origa will play all original imports. including the games you named.
messiah does all the origa does, just without any need for swapping and without having to buy an AR2/Region X.

if you never had a neo mod installed before, chances are good that your laser will be fine. I had the messiah in my v3 and it read dvd-r without problems.