Let me ask you, does the native voice of the amp become more important than the features to you?
I've never wanted more knobs or controls on an SVT as it sounds "just right" to my ears just as it is.
Understood that many will not agree with my example of best amp tone, but the older I get, the less features I need other than a HPF, slight OD, and maybe compression, all of which can be had with a couple small pedals Velcro'd to a piece of plywood.
IMHO. If the native voice of the amp is close to what you want, less controls are required to massage the sound into the desired shape.
IMHO the way tone controls work varies. Some controls are very good for dialing in a particular sound; mostly making minor adjustment to tonal balance. Other controls are more effective at dialing in a range of different sounds and/or possibly compensating for acoustic problems in the room.
IMHO SVTs have some of the better tone controls you will find on tube amps, but I don't consider them particularly versatile. Whether one likes it not, SVTs tend to stubbornly sound like SVTs (IMHO).
I would definitely say SVTs have more versatile tone controls than vintage Fenders, but I learned to play through a Fender and that sound seems more like home for me. I find it very easy to dial in an old Fender. However, Fender controls are useless when it comes to dealing with acoustic problems.
Old Mesas tend to have quite a bit of range to their tone controls. For me, some of them can be really fussy to dial in. It's sort of like I can almost get the tone I want and then the sound jumps somewhere else that is still not quite right.
To my ears Mesa graphics are an essential part of the sound, but I find it's best to use very gentle tweaks, otherwise the results are not particularly musical.
