Need help for all (Please Read)

[filliper]

Hey guys how ya goin?
I'm have a doubt about the new NEO4.5 and the US MEssiah.
I have V3 US Console but now I don't know wich modchip I put in my machine.... I live in BRazil and I would like to see DVD Movie (Region4) in my PS2.... so I thought about NEO4.5... but I don't know about my PS2 laser.... a lot of people don't like the NEO2.2 b/c the damage in the laser unit..... I don't know if this happen with this NEO4.5.... some guys never worry about it... and like the NEO4.1 or NEO4.5.... it's only 11wires to solder.... but US Messiah I can play all my games without swap but I can't see DVD Movies... I need swap with DVD RegionX..... the both chip I have to swap to play something.... I knew abut MEssiah2 bu I can't wait anymore to chip my PS2.... so what chip I have to choose... wich one is better? the NEO4.5 damage my laser unit? and the US MEssiah not?
Thanks all of you guys....