Mod chip vs. flip top

[woo124]

Hi,

Thank you for all your input. I saw many discussions of mod chip problems in this forum. People stating no chip is perfect, but Matrix Infinity is almost perfect, but anyways, I can't find it any more. So, I will just take your words that it is safe and good.
Now, here the other question that wasn't answered. Is the laser of the ps2 a really big issue for using mod chips? I have a really old 15000 Japanese ps2. They work ok for just playing Jp original games, but I suspect the lens are somewhat weak. Do I need new lens to enjoy mod chip with playing backups and whatnot?
One last stupid question. When people say laser, is it the same thing as the lens or are they different?
Thank you