I've seen sseilmnop's core in person and seen it seal up and run nice. As near as I can tell, it will operate as well as one of the bigger vendors... at the very least, it's your "bang for the buck" deal. Even if it ran a couple degrees warmer than ZZP, saving a few hundred leaves you room for some more mods that will increase horsepower more. Last I checked, more than 20 (30?) folks bought them between the forums. Yet to hear a bad review. Up to you, though... the size of an IC does matter, as folks have shown with ZZP's short stack intercooler - it's almost worthless. The sseilmnop is slightly shorter than ZZP, if memory serves. It doesn't seem like enough to upset anyone, though.
