questions about modding a slim ps2

[sublime90]

ok heres my story. i have a v5 ps2 modded with a messiah 2....everything was fine for 4 years untill the laser died, now ive replaced the laser 3 times!! each laser dying after about 1-3 weeks of use and im really fed up with the whole replacing the laser thing. so ive decided to buy a slim ps2 and mod it, ive heard alot of people say the slim ps2 has a stronger laser. anyways what are some good slim ps2 mod chips? ive heard of the matrix infinity and the dms 4 lite and pro i dont know the differance between the lite and pro but if theres other please fill me in. i want to just get a ps2, mod it and be done and not worry about all these problems

thanks