I have a Vamo a SID and SVD and I can recommend all three. The SID and SVD have the advantage of the removable top cap which will allow you to put your
tank on until it contacts the center pin then unscrew the top cap until its snugged up to the bottom of your
tank.
If you go with the Vamo I recommend the stainless steel version and get a straight ego cone trim ring; then you can use it to limit how far down you can screw on your
tank to protect the center pin.