I'm gonna limit myself to a top 10, else I be here all day, but feel free to name as many (or as little) as you want.
1. X Lord X - Europa (6I6) - I didn't ever see him during his early pk days, just heard of his reputation. Got to fight him a lot more during p14-16, where he won every tournament he played pretty much, absolutely schooled me in only 3 fights I ever had versus him, although me and Sonez took him down 2v8 with rl winnage.
2. Sonez - Europa (ELR/I-C) - Best 2vx partner I ever had, both had complete understanding of each other, and just generally owned on his own. Still masturbate daily to the forementioned fight at depsise, where we took on 8 6I6 and random orangenames and killed about 15 people before dying.
3. Zim Zum - Europa/Drachs (I-C) - I own him 1v1 @ duels np, but is without doubt the best all round pker ever. Has 37 million characters, and knows how to play them all. Make him play with Senji and he is unbeatable.
4. Zole - Europa/Drachs (I-C) - Same as Zim but not quite as good, and Senji hates him.
5. SuperBOB - Europa (6I6) - Was without question the best pvper on the shard with a 56k modem, I thought I owned til I dueled teh BOB

6. Twisted/Ky Wild - Europa (ELR) - Second best 56ker ever, had the bestest duels ever with him, recalling for regs was expected at least once a duel.
7. Manix/Ethereal - Europa (Every good guild ever cept I-C) - Probably the second best duellist I've ever fought, maybe on par with Az, awesome xhealing as well. Would prolly be higher but I haven't played with him so much.
8. Az - Europa (6I6 I think) - Best (or close to it) duellist ever, crazy timing and a macro I learnt from him I'll never forget (or ever tell any of you)
9. Me - Cyric - Europa/Drachs (I-C) - YES I am egotistical big headed suck my own nob kind of guy, but if you all think closely about all the pure mages you've fought after AoS. I'm the best. FAKT
10. SURPRISE ENTRY - Calix - Europa/Drachs (I-C) - Knows he has old man timing and can't kill shit, so completely dedicates his contribution to assisting to kill, and l33t xhealing. Rl memories of wtfpwning despise with calix speedhacking g heals. Rl skilled teamplayer.