It's a fairly hard choice, although Wormy just wins out.
It's one of the great shames of RPGs that Trampier never finished it, or that it was ever reprinted. The guys at KoDT did their best to get it back into print, but Trampier wasn't very keen on it happening. The editorials about it in KoDT made for interesting reading.
Also because they predate Dragon, or had their own titles later, I don't really consider Nodwick, KoDT, Order of the Stick or What's New technically Dragon comics. That did make making my choice a lot easier. Snarfquest could also count as that, as it's now running in the back of KoDT, but really feels like a pale shadow of what it was.
I always preferred the comic strips in White Dwarf to the ones in Dragon - Thrudd, Derek the Troll and The Travellers were all brilliant. Gobbledegook went beyond brilliant, and is probably my all time favourite game related comic. There's a certain bias to my liking though, I grew up with the old English comics like Buster, Beano and Cheeky Weekly, and the style of humour in the White Dwarf strips was much the same.