I went to both last year, and am planning to do both this year.
At Internext you'll meet a lot of people, but it's hard to have a decent conversation standing on the show floor, or shouting over the music at a club. Also it's a lot of faces, a lot of cards, and not a lot of time. If you've also got a booth, it's a lot of stress.
Negril is a whole lot longer, more relaxing, and beatiful. There are far fewer people there compared to Internext, but by the time you leave you'll at least be able to put a name to the face of all of them. I think Negril gives you better opportunities to work out deals.
I know Lightspeed is coming back in force this year, and Dokk is a great help... "Anyting you need, mon". I hope to see BT and Rocki from TCG, Zebra, VirtuMike, Tonja from GoodThinxx, Aly and Manson from Python, and I think Cynd & Loki are gonna make it... I'm sure there will be a 'Negril Rollcall' thread in late January.
Hey Sin, who are you?