It is my honest opinion that if you can only afford ~$200USD right now, don't buy anything. Save up instead until you have enough for a JG or better. They're worth the higher price. In addition, the TF16 uses the old TM body tabs design to lock the upper receiver into the lower. Those things have a rep for breaking easily, especially with a plastic body. And in the long run, the amount of money you'd need to spend to bring a TF16 up to a JG or G&G standard (i.e. metal content) will likely be significantly more than simplying buying a JG or G&G.
"The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."