My final thoughts on all this:
1. Good speakers are about good engineering and good engineering is hard to come by.
If great speakers were about throwing a couple of more dollars at components, everybody would be building $300 speakers that measure +- 1db through their range and sounded perfect.
2. Good engineers know they are good and are not cheap.
I have never designed a speaker, but I've worked with a lot of engineers, both in the software and automotive industries. Good engineering costs good money.
Small companies usually have one engineer: the owner. Big companies like Harmon (Revel) have a lot of $ and (hopefully) very good engineers to put to design projects. They should produce superior results, measured and otherwise. When they do, they also charge for it, because the have a lot of expensive engineers they have to pay for.
3. Things that measure big, often have a subtle footprint. I first learned this when I found a 15 db mountain of a peak at 52 Hz in my room. Armed with a BFD and REW measurements I mowed that mountain down. I then sat down and put my favourite pipe organ disk on prepared to be blown away by the improvement. To say the difference was subtle would be an understatement.
4. My M80s sound good to me. On the occasions they have been directly compared to close competitors, they have stood up well. I'll listen to the LFM1100 (yuck, what a name) before I decide how good, or not, they are.