This is a tough question. Every racket has a particular feel and that feeling is different for each player.
I can’t do a comparison because I would have to play with both rackets again and do not have access to them. And, this would be my comparison which will still be different for you.
The question will be how much you enjoyed playing with VT70 and whether you felt it added to your game. Without playing with VT7 do you feel you are going to lose so much by using a cheaper version? If you do, then go with VT70. If budget is an issue then VT7 has to be a good alternative.