I agree 100% with making your own patches, or at least tweaking some existing ones to a point where your hands and guitar fit better.
With the Vox models on Helix you can try bringing the bias parameter all the way up to get the class A power amp thing happening for you. In general, if I'm playing through a powered speaker, I use the high and low filters on the cabinet models (or in the global EQ) to tailor my sounds.
My favorite clean sounds so far have been with the J45 Brt. > greenback25 cab. I tend to use the master volume and my and drive to set to the edge of breakup, then use the guitar's volume knob to dial it back slightly. On the cab, I've been having luck with the 57 or 121 (if you want warmer sounds). With either mic I usually back up the distance 2-3 inches. If the 121 starts to get muddy, bring in the low cut filter on the cab, I've gone as high as 120k with certain guitars and thought it sounded nice.
I honestly think the biggest improvements in newer modeling units all across the board are the lower gain and early break up tones.