At this point I contact print 8x10 on the same Ilford enlarging papers I prefer for enlargements. Lots of people love Ilford MG Warm Tone although it is not the particular paper I use. Heavy glass works fine, as long as it is good glass - free of flaws significant enough to affect print quality.

Regarding sharpness, I'm also a sharpness freak but I have a hard time believing anyone can actually see a sharpness difference between a print made on a current top quality MG enlarging paper and a single emulsion contact paper. I suppose you could split the "difference" by using a graded enlarging paper. I'm sure Lodima is an excellent paper, but I would choose it (or not) based on its tonal characteristics, not sharpness. Just my opinion though.