Which one is worth buying NEO4 or MESSIAH
 

NEO4 Looks like its had more research on it, but Messiah looks more promising...Not sure which one to buy when its available

If it's between NEO4 and MESSIAH, it looks like MESSIAH does more, importantly booting import originals. This is very important if you are desperate to play a DVD game and you haven't got a couple of weeks to work out the DVD rip nor £400 for a DVD burner.

You could also look at ####://www.madeiragames.com and examine the OrigaChip (which I use).