We had a writer ask what style we were looking for at Electric Spec. The answer to this question is: we accept any style--as long as it's well-done. Super-helpful, right? :)
But seriously, there are a myriad of styles and I think we have accepted a large variety. Recall style can include such things as sentence structure, pace, vocabulary, use of dialog, point of view, tone, character development, time sequencing/chronology. So, pick whatever style you like and send it in!