I happen to be sitting next to both, and am trying to decide which to keep. (no m-scaler)
If ergonomics are an issue, the TT2 is worth all the pennies. Using the Hugo2 makes me want to smash things. Using the TT2 makes me want to play with the volume marble. It’s a huge difference, which, if you are using it everyday, may be worth at least part of the price.
On sound alone, (here comes the controversy) if I only listen to rock, I would not pay for the upgrade. I strain and strain to hear differences, but on 95% or more of what I tried (am trying) in the indie rock, folk, electronic, hard rock, classic rock and pop genres, I’ll be damned if I hear hear anything reliably.
For well recorded classical, jazz, and the tiny bit of rock that qualifies, there is a difference. It is in my ears, better. Is it worth double or more? I can’t answer that for you. I’m struggling to answer that to myself. The price/performance ratio has hit the steep part of the bathtub curve here.
But yeah, listening to some small combos and quartets I have been digging on lately, it’s real. It is actually, the finest sound I have ever had in my house. Clsing my eyes it sounds like real instruments, not recordings. I don’t have an audiophile dictionary handy, so I won’t be talking about why. I’m still struggling with why. Had my wife A/B the input switch between the two, and I got 9/10 right by listening to the “body” of a note. The decay, sustain, resonance, and detail within.
As always, my advice is worth what you paid for it, and is disclaimered by the following: All opinions and positions are mine, if you do not like them, please feel free to get your own.