I use both the VPI and TTweights ones. [not at the same time]. The TTW is actually easier to use for me as the VPI often appears to be correctly placed but isn't. I also have both the top VPI weight and the 3 pound one from TTW. [my ring is the lighter one]. I recommend all these, I used vacuum tables at one time and these give the advantages without embedding dust as the vacuum did. The sound is definitely different, better for me , for you ? I have heard from Raven users that they don't like either, they have their own set of upgrades. I recommend them but try before you buy if you can. A dealer should let you try something this expensive out if you have one locally, at least I will. Don't ask me about which ring set or combination sounds better, I haven't used them nearly enough to know.
