As shallow as this sounds, I'd probably go for the art style that seems interesting to me, visually appealing, but I quickly drop it if the story isn't to my taste. There's been some comics that I've read that have REALLY NICE ART, but the story just falls completely flat, and at times it feels like abit of a disappointment?
That said, there's been some comic works that I really enjoy that do not have the best art on the block, in my opinion. Example; Homestuck and problem sleuth by Andrew Hussie, writing was sometimes choppy, as well as the art, but it was charming with its witty writing.
TBH, I think both contribute to it. Art for an impression on a story, as well as good writing to keep the reader captivated.