OK, there is one table. I've scanned 7,3*W 3 months ago with CM120 where IBU was installed on original CM LNB-holder. Got lock on some transponders and put data in the table. Yesterday scanned same bird with same antenna, another IBU attached to Fibo feedhorn and SUB. Both times I did my best tuning to maximum signal. But I can not say I did 100% maximum both times. There were lock on some TPs in May and yesterday there was not lock and vise versa, so I excluded such frequencies from the table. I do not remember at what time of the day I did the tests and I do not know how big variations per time each transponder has in my area. From 40 common transponders May-test made average almost 57%, and yesterday's test made almost 60% that gives us about 5% better performance. However, in May there were some transponders with stronger signal, but average is smaller anyway. What does that mean? I do not know!
For me, personally, I like Gregory setup more than usual, cuz it is not ordinary and pretty seldom.