I have owned ARC VT100MKII and still own SF Power2. In stock form, VT100 will give you warmer "tubey" sound than Power 2. Initial listening, it will make you thinking that VT100 sound better than Power 2. After while, Power 2 will start sounding more realistic sound than VT100. Power2 has more details/controls and slightly leaner than VT100(I think this is reason why many reviewers say that Power 2 sound more SS than Tube).
On Power 2, I recommend changing both output and input tubes as soon as you can. Once I have changed output tubes to KT88s on Power2, Power2 will definitely win you over. I currently have Svetlana KT88s and Tesla KT88s for power(differnt sound) Amperex bugle boy 6dj8s for input on my Power2.
Regarding "Living with the amp everyday", I would definitely pick Power 2 over VT100 any day, any time. You will know what I mean when you are in need of retubing VT100 or tube rolling on VT100.