@ED3 , @Bent77 nailed it. Some people hear and feel something special in a tube amp that makes dealing with the extra weight and maintenance worthwhile.
I have 28 amps in my collection and about 2/3rds of them would be classified as all tube. So I certainly get it, but I was touring pro for about 25 years, and I stopped gigging with tube amps while I was still an amateur.
So I think think tubes are cool, but they are not something I can't live without. For live performance I would rather have a hybrid or solid state rig.
Each player really should assess their needs, expectations, and how hard they are willing to work, and then make a decision for themselves.
A lot of people who love tube amps are going to tell you to get the SVT because it's the best amp ever made. IMHO that's rubbish because a lot of people don't actually like SVTs. I personally like SVTs and I own an 69 and 87. However, I can't stand to play through the Ampeg 810. So I guess some of the faithful would still consider me a heretic

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For most of my professional career I used something like an Eden D210XLT and about 250-300W. I used several different rigs over the course of my career, but my last touring rig featured the Eden stack on a 16-space rolling rack. I also had a D410XLT that was available any time I wanted it, but I rarely used it unless it suited someone else's needs. The D210XLT was plenty for me.
A Heritage SVT is definitely a very desirable rig. But it's up to you to decide if its the right rig for you. Don't let anyone else make the decision for you (including me). It's your back and your cash that are at stake.