Perhaps the SeymourAV Center Stage UF or Dreamscreen V6?
Why do you want to upgrade from the Spandex? I thought it's biggest weakness was it's gain which shouldn't be a problem with your screen size. And I thought one of Spandex's strengths was that it worked so well with minimal seating distance.
7.4.4 Theater Room: JVC-RS500, Silver Ticket AT 2.35:1 142”, Onkyo RZ830, Anthem PVA-7, Panasonic UB420, Apple TV 4K, JBL Studio 530’s, 4 - 15" DIY Sealed Subs
3.1 Living Room: Samsung 64” F8500 Plasma, Anthem MRX 300, Dynaudio Audience 52’s, Dynaudio Audience 122C, NHT SubOne, Roku Express (2019)