Thank you!
I've been thinking about going with something like this: https://smile.amazon.com/dp/B079PVB6DR/?coliid=IJ95PZWY17PE8&colid=16JBR5N5CQ5B9&ref_=lv_ov_lig_dp_it&th=1 It has those tapered edges, but I wasn't sure if there was an important reason I see so many T's with abrupt-edge dishes, or if it's just what most T keepers happen to have on hand. Sounds like it's the latter.