Which one would be more appropriate to cover the 5 Mesa ranges (80, 240, 750, 2200, 6600 Hz) with the ability of scooping/boosting?you can't compare the Fromel to the Empress reasonably. The Fromel is a great EQ but it does not cover the frequency ranges that the Empress does nor does it do it as precisely. If you want a very good and simpler EQ go with the Fromel. If you want a studio grade EQ in a stomp then go with the Empress.
Shape is a 3 band, the low center is 75 the high center is 6800 and the mids are sweepable between 75 and 6800, cut and boost for each band is about 12db +/-. If you set the sweep for the mids at 2:00 you will be at 800. Width for each band is 1.5 octaves. Shape will get you the scooped sound you are looking for. Boost high and low to taste, dump the mids and sweep til you find your sweet spot. If you want more tweak-ability then go for the Empress.I'm looking for a musical, quiet, effective EQ pedal to sculpt the sound of my non-EQ loaded Mesa Mark IIC+ head.
Basically trying to cover the original EQ bands (80, 240, 750, 2200, 6600 Hz) to scoop mids/boost highs in the best possible way.