Mejames- Though I don't own the VTLs, I've done quite a bit of design and upgrades using many different caps. My preferences may not be yours, but I would strongly consider upgrading using the copper foil-in-oil caps from Audio Note (with an occasional VTV silver alloy bypass cap!). Though different film type caps do not sound the same, I tend to prefer the multicap PPFX-S tin foil, and depending on the location in the circuit, bypass them with an RTX cap, over most of the other film types. The exotic teflon caps are quite good, but very expensive, and I still found that I would mix and match to get the sound I was looking for out of the component. I'm just suggesting that you may find that a different sound may not be a better sound in all areas. This is where DIY projects can yield great gains for minimal cost and effort. Good luck.