You're better off getting a real NES and SNES... trust me, as a collector I can say the FC Twins and Yobos etc. are all low quality pieces of shit.
Save up a bit more cash and get the real Hardware! The controllers on the Famiclones suck, and they are prone to shitting out on you quickly. I promise you that you'll regret buying one...
Sure, you can use real SNES controllers. But if you wanna play on it with NES games you still need to use the SNES controller, which in my opinion, makes it pointless to play on "Real Hardware" via the Famiclones because you're not even playing with the right controller. =/