The 075 is only 10cc smaller than an 880 and has the torque advantage so it should almost keep up with the bigger saw. it will be interesting to hear how Bob's 880 compares with his 075.
I don't know where the supposed torque advantage of the 076 over the 076 comes from but you are not the first to say this.
My manuals give these specs
076 : 6.8 Nm (5000 rpm) / 7.0 HP / Max rpm 10,000
880 : 8.0 Nm (6000 rpm) / 8.6 HP / Max rpm 12,000
I'd love to be milling with the 880 but everything is conspiring against me. It's still too hot, I still need to run the saw in and I've been dragged off by SWMBO for a weekend down south (and definitely no chainsaws allowed this time). Actually I can't complain I'm sitting on a balcony looking out through trees to the ocean, beers cold and I can sit here with my laptop and read AS, life's not all bad!