Neither.
Bangel, Dangel(us), Fresley, Weslah and Sprusilla are roughly the 'ships that dominate which fanvids, for example, I'm likely to search for. I'm probably one of biggest fans of Darla (and Connor!) around here. Wesley is my second-favorite character after Angel, so that definitely applies.
Early seasons BtVS, but then my fandom home base largely switches to AtS (with the massive exception of Cangel).
Fun fact: I used to 'ship Spuffy when I watched the last seasons first and the first seasons last in reruns. It was the fandom that made me a permanent Bangel and I gradually lost interest in BtVS' later seasons.
I do, however, prefer Xanya (for all Xander's faults, he was at least better in the later seasons) over Cander (Cordy's relationships generally leave me cold in their utter lack of chemistry, though the short-lived Coyle worked best), but I prefer Willoz over Tillow (I do like Tara--more than Willow in the later seasons, for sure--but Willow becomes a terrible person in that era and in that relationship).