i can help you out with your question......being the resident egnater maniac here.....i cant compare them to all of the amps you listed but ill list all the amps i own and the ones i used to own.....
amps i currently own:
* * egnater tol100(pre-rock) w/ el34
* * egnater tol100(pre-rock) w/ 6l6
* * egnater ie4 preamp(pre-rock)
* * budda sd30
* * marshall 68 plexi
* * vht 2150
amps i used to own
* * marshall jcm 900
* * marshall jcm 800/ modded
* * vht pittbull ultra lead
* * bogner xtc 101b
* *
bogner shiva
* * bogner fish preamp
* * ada mp1
* * ada power amp
ill tell you this, as soon as i got the tol100 in my hands, i sold all my bogner gear....totally ate its lunch....the egnater is so versatile its scary...bruce really knows what he is doing...basically, the channels are as follows in a tol100
channel 1.....fender clean...you can get it to break up if you want, but its one of the best clean channels ive heard....it also has a "twang" setting.....great for acoustic sounds all the way to country and blues
channel2 ....SRV all the way.....texas blues channel....like the channel 1 but with balls....nice punch....it can be dialed in to break up and get a country rock tone.....perfect for blues or country solos....i even use it for that tone you get when you roll off of the high gain channel for quieter but
distorted tone.....alot easier to press a button than to roll off the volume
channel 3.....marshall vintage on steroids....also has a modern or vintage sweet switch......can get either a vintage marshall tone or a high gain rythem tone....very glassy
channel 4 .....forgitaboutit.......high gain nirvana.....this can be used to capture the classic EVH brown sound all the way to speedmetal icepick in your face stuff....
now, keep in mind that many pre-rocktron models were custom made for the person ordering.....so many are different and do a little different things.....but, they are all pretty similar to what i just described....some of the differences are gain and some have different functions for the 2 sweet switches.....
as for comparisons...you cant really compare it...all those amps you listed have totally different tone characteristics.....
oh, and if you buy a pre-rocktron model and its not your bag, ill always buy it off of you.....or hook you up with someone that wants it....i always have a few people asking me to find them one...........
im curious about the vendetta, *looks like a tol100...but i havent really talked to bruce about it yet.....they seem to be a little high in the price