Here's my take, as a Mk V user who is not a high-gain user. I am NOT 100% up-to-date with the Mk VII, so don't hesitate to correct me if I get something wrong.
Things on the Mk V that I love that were NOT continued on the Mk VII.
- Overall Master for the amp.
- Option to use the Preset EQ PER Channel.
- Extreme voicing (yes, I'm not a High-Gain user, but there are fantastically useful tones on this voicing that don't HAVE to be super high-gain!)
- Ability to set individual channels to Pentode/Triode and SS / Tube rectification. These permitted subtle but VERY useful tone and sag tweaks.
- 10 watt option. I know this is NOT much different from 25 watts, but for some situations getting this low helps.
- Footswitchable Solo Boost. VERY USEFUL feature. Not sure why the MkVII dropped it.
- Mute Footswitch. Rarely used, but when I needed it, it was a very nice option.
- the channel layout with Ch1 being 3 "clean" choices; Ch2 being 3 "crunchy" choices; and Ch3 being 3 heavier voiced choices. I can see what they're going for with the VII's channels having a Clean/Low gain/Mid or Hi gain choice, but that just seems less intuitive to me.
Things on the Mk VII that I really like:
- MkIIB voicing - great option!
- Overall, it appears that the voicing are slightly tweaked from the MkV and I like the result
- Reverb (per channel) controls on the FRONT of the amp. NEVER liked having to adjust from the back on the MkV.
- The Cab Clone option. I know that it's not perfect, but it is EXTREMELY useful. having 8 choices of Cab IR s and individually (per channel) assignable is awesome. I think that given a few minutes, I could set a very useable set of tones for stage use that work great this way. Avoid a horribly placed mic by a sound guy, or no need to lug in a cab at all, is a great option to have.
- Weight / Size. I know the MkVII is only 5-7 lbs lighter, and only slightly smaller, but every little bit counts in my book. a nearly 50lb head can be annoying and the fact that it is ever-so-slightly wider than my vertical 2X12 cab makes it less visually appealing, too. I love the new form-factor of the MKVII.
Overall, If I didn't have a MKV, I would be very tempted to grab a MKVII. If I found someone with a MKVII that wants to trade for my MKVII + cash, I think I might be tempted. I can NOT justify having both, however. But I think it's a good move by Boogie to create the amp in this iteration. We must admit that MOST higher-gain players have a ton of options out there ... from modelers, to the old Marshall standbys, to Revv amps, etc... so given the market, MB sees that there are FAR FEWER 3 Channel amps out there for folks who need a VAST variety of footswitchable tones. Cover Band "Dad Rock" guys like me, who want to use tube amps, but just can't justify a massive pedal board for the 3 or 4 levels of gain we need. I predict they will sell more of these to people like that, than they would have to High-Gain users had they catered more to that end of the spectrum.