Edge-lit done well can look very very good. Full-array, done poorly, can be a disaster. There is a crossover point for cost-effectiveness.
Maybe I lucked out, but my 70" Quattron has very little flashlighting or clouding. You have to really look to see it on a darkened screen.
I think the blooming halo effect around bright objects with a full array would bother me more. It depends on which artifacts you can live with.
The LCD part of the equation is important too -- getting good contrast ratio and viewing angle while maintaining a wide gamut is tough.
Best to look critically at the sets and decide what you want...