You've got to play around and tweak the VT to fine tune it for your personal weight and climbing style. I wasn't crazy about it at first either but I kept playing with it, adjusting the length of my prussic cord, trying different slack tending devices and trying different combinations of coils and braids before I got it dialed in. Another factor is the prussic cord needs time to break in before it really starts to work optimally. That has been my experience with HRC anyway.
I am sure glad I stuck it out with the VT because it is absolutely the sweetest friction hitch I have ever used. After I got mine dialed in it is super responsive. I am using 8mm HRC on Poison Ivy and using a boat swivel snap to tend slack. Works great for me.
This is the only pic I have of my climbing knot. Can't really inspect it closely but you can get an idea of what I use.