I've been using 2 pair of stock "stacked" OLAs for several years. To me, the soundstage is amazing, as is the deep bass. For "soft" music like acoustical, most jazz, folk, bossa nova etc, to me, the fried egg "tweeter" is fine. I especially appreciate the presentation of vocals.
When I start to throw edgier material at them, especially at higher volume, that's where, I think, they really start to show their limitations. I really like Dire Straits and play a lot of their vinyl. Most of their songs sound fine on the OLAs (at moderate volume). But sometimes the guitar leads, like on Sultans of Swing, are just too piercing to my ears. Thankfully, I have another system that is kinder to this type of material, and that's where most of my rock gets played, especially if I want to crank it up.
I do need to mention that both of my systems are in "hard" rooms with wood floors and lots of glass. The stacked Advents are being powered by an 85wpc Nikko NR-1015, phono cart is a Shure M97xE.
I haven't listened to hardly any newer speakers so can't comment on how the OAs compare.