To add to sinnersmoon's findings, this weekend a buddy came over and he brought his Savage SE (and JVM410H) to compare to my Savage 60, Invader 100 and 5150III (which we hardly played).
Most of the testing was done on my Engl 4x12" Pro cab (all Vintage 30's at the time, but since yesterday I threw in two G12-K85's).
One of the first things we noticed that the Savage SE's clean was nice, but not as lush, wide and sparkly as the Invader's (in bright mode). You could get closer by increasing the treble and presence, but then the Savage SE's crunch (which is on the same main channel as the clean) would be overly bitey and bright.
Also to get the most out of it; Preshape and Pentode Mode needed to be engaged, otherwise it would sound very limp and thin.
Also, this is -depending on your taste- an area where both amps fall slightly short;
the capability to have two great high gain tones that can both be used as either rhythm or lead.
In the case of the Savage SE, I found the 'Crunch 2' to be indeed too much Crunch instead of a good higher gain, saturated (in typical Engl-fashoon) tone. It lacked the 'searing' quality of what most Engls have as their 'Lo Lead'. The Savage SE's Lead channel kills, sure.
For the Invader, Channel 3 is the money-maker and gets very close and thumping, although the Savage SE's lead channel is a bit more raw. The thing with the Invader is, Channel 4 is pretty 'meh' to me. High gain yes, but too loose, middy and smeared. I run the mids at 0 to compensate there.
Now both amps have 2 master volumes, so you could still use the one channel with 2 volumes, but hey, we're not buying 4 channel amps to have 1 or 2 channels be 'so-so' right?
On paper the Savage SE might even be the more versatile one, with the additional buttons, but some were just needed to be left on, whereas with the Invader you have more useable sounds easily switchable. With the clean channel's gain between 9 and 10 'o clock in lo gain mode (and bright ON), you have an awesome wide, sparkly clean tone, even with humbuckers. Switch on High Gain mode on that channel and you have a nice chimey break-up. The same with channel 2.
That being said; I haven't played the Savage 120, SE EL34 (only the 6L6, which was perceived a tad lacklustre with maybe 2 great tones) or the new Invader II.
Judging from the Invader II clips, it seems they reigned in Channel 4 to make it more like a souped-up Channel 3. This sounds positive at least.
Also, using a footswitchable fx-loop all the time and lacking an onboard noise gate, that makes the Savage 120 less attractive.
From a design standpoint, the 5150III on the red channel is definitely less noisy/hissy than the Savage 60 when setup with a similar crushing high-gain tone. I can imagine (and I've heard many users concur already) that the Savage 120 would need a noise gate most of the time too.
And who knows, there was talk of a Savage 120 version 2. Engl would be smart to include both the noisegate and footswitchable fx-loop (2 fx-loops, set #1 to 100% dry and #2 to 100% wet...switch between them, voila!) to that.
