I have a problem in that while I would prefer a soundbar solution, I only have room for flanking speakers. Any recommendations or thoughts on a solution?
Any good quality on-wall speakers will work. You do not say what your budget is.
A few I know about; JBL L820 (4-way), JBL PT800 (3-way); Revel Gem2 (3-way). All three are quite large, but put out excellent sound. There are others, of coarse, but I only have experience with these tree.