Fringe basically = X Files right?
No. No aliens. Similar type of Mulder/Scully chemistry but the kicker is the parallel dimension/crazy scientist angle. It takes a few episodes to get going but is definitely worth a watch. The 3rd season just started and it really amped up the weirdness. In a good way. Plus, its really the only good ScFi show on TV at the moment. I don't watch Warehouse 13 so I can't comment on that one.