i would recomend either a matrix infinity or a crystal mod !!!
depends on what version ps2 you own !!!!!!!!!!
the above are basicly the top dogs at the mo ,, however i hear through the grapevine that the duo 2 is a good mod ,, for price.....
i have a v7 ps2 with messiah 2 mod and will not change for the simple reason that it has never let me down ,, never failed to boot n e thing so will stick with my little puppy
but if you havent got a mod then dependant on the v ps2 you have the above should be the way forward .... by the way get fekin rid of the swap ****e lol