PS2 Modchips

I'm thinking of getting my PS2 modded and I don't really want to bother with Swapdisks and the like. There's a place locally that use NH9 and Subzero Ice chips... but its hard to find info on those chips. Are they any good? Any recommendations? Or should I just suck it up and get a fliptop + swapdisk?

Hmm didnt know that you couldnt play ps1 games, any reason why? i mean you get 2cds (with swap magic), one to start DVDRs and one to start CDRs so i cant see why ps1 games wouldnt work.