So if I bought 5 S1s, would I get the same results as a single 900 GH rig?

Hello All,

Just started learning about crypto currency and mining.
My question is: If I bought 10 rigs that ran at 200GH/S would that get the same results as running 1 rig at 1 TH/S?  If yes, what is the down side?  Just thinking if you can get a few cheaper older models, the price may be better than a newer faster one.