Reviewed.com was certainly excited by the OLED nature of the EA9800, noting that it was "capable of saturating colors further than traditional TVs," and that "if real life had a 'contrast ratio,' this is about as close as TVs are going to get." TechRadar also noted its "remarkable contrast-rich pictures," and PC Mag says it has "the best picture I've seen on an HDTV yet."
As for that curve? Well, Reviewed.com does not "see many objectively-measurable improvements to viewing," though the curve does help fill the panel with "emissive, circularly-scattered light which all but eliminates reflectivity and glare issues." But Reviewed.com also notes they "can't imagine a flat OLED screen would fare much worse."
Of course, a good TV is more than just its screen, and TechRadar notes the EA9800's "unexpectedly good audio," with speakers that PC Mag says "aren't particularly powerful," but that they're "about what you can expect from any sound system built into a display." PC Mag also notes the EA9800 is "laden with features," including "two pairs of frankly stylish, could-be-mistaken-for-decent-sunglasses passive 3D glasses" and access to "tons of online services and apps."
Though the curve is certainly interesting it's not the reason to buy this TV. OLED is set to replace plasma and LCD at the top of the picture quality heap, and the EA9800 is a solid first shot across the bow from LG with the high price to match.