the best no solder chip for v7 ps2

[black240]

i have couple questions. first of all, if i installed the mod chip in my ps2, does it run all the original game perfectly(included ps and ps2 games)? and can i play dvd without any problem(same region code of course)? if so, which one should i get of my ps2, blue messiah v7 or the magic II? and what do i need to solder the wires myself? is it hard to do it? please let me know. thanks