Tanfo Pro Stock II is VERY nice and many guys I shoot with are using them on the USPSA circuit. I am a purist and prefer my worked over 75 or the Tactical Sport. If you haven't laid your hands on a Tac Sport, you really need to find one and try it. SA only and mine's around a 1.5lb trigger. Stacks bullets through the same hole all day at 40 feet. Ridiculous!
The Tanfoglios are indeed a clone. The parts are NOT interchangeable, though the design is from the CZ who is from the Browning Hi Power. During the Cold War, you weren't able to import from Czechoslovakia, so Tanfoglio did a booming business selling their clone. Early on, the Tanfos were pretty crappy when compared to the original. Lately, however, they have been turning out some fantastic guns. Really nice stuff. However, if you think finding aftermarket parts for a CZ is hard, you should try finding stuff for the Tanfo.
Get a CZ and don't look back. The more you shoot them, the better they get. Like a fine wine getting better with age. CZs routinely go 90-100k rounds with no problem. Replace springs, lube, and keep on going. Excellent design.