Yeah Steves Carts is probably one of the best mods Tekkit has. Learn it, and love it. It can mine a MASSIVE 9x9 tunnel in about 30 minutes, it can farm any type of crop or tree at the same time, it can be self sufficient. And with another few patches to a current bug with Chunk loading, it can transfer liquids long distances without the need for tessaracts. But yeah Tess's are better, just looks cooler with Steves Carts.