Presently I have a HJC FG-17. This is a good composite helmet with a SNELL rating for about $160 on Revzilla and Amazon has a wider selection. Bottom line if you are a cheap SOB, like me, this helmet has the best bang for the buck. I have had mine for 4 years.
Am not sure I have as much respect for Snell as you. On the positive side Snell insists on testing helmets in Snell labs or a few approved independent labs such as ETL. DOT allows the manufacturer to self-certify.
On the downside Snell thinks the harder the helmet the better. They don't want the helmet to break at G-forces in excess of those which turn your brain into oatmeal.
Things I don't like. Size XL will not fit on the saddle bag. I usually were a large helmet. The tinted visor does not block UV well and I need to wear suntan lotion if heading into the sun most of the day. My old Aria blocked UV.
I put a 2XL Shoei RF1100 with Cardo Packtalk Bold in my sidecases.
Things I like about it are price. Shields are much less expensive than Arai or Shoei. Liners are replaceable and easily removed. Vents, shield, pin lock shields and liners are easy to find and not expensive.
Have 70,000 miles on RF1100's original face shield. It has a ding but not where I notice while riding. Am careful when cleaning not to scrub bugs into the plastic. People think I'm funny to spray cleaner on the plastic then rub it in with my fingers before wiping off with cloth. But with fingers I feel the bugs and can rub lightly until the bug comes off or carefully scrape with fingernail.
The fit of modular helmets do not appeal to me or I haven't found one I like. This makes me an odd ball and that is fine.
My Schuberth E1 is my first modular but I don't have it fitting my head just yet. Presses on forehead, holding eyebrows down making it hard to keep eyes open. Wiggle the helmet and get eyebrows held up by the helmet but things shift and once again they are being pressed down.
I also like Snell rated buckets. Composite shells distribute impact energy better than poly shells. Poly helmets are right on out. (Monte Python joke).
As a retired mechanical-educated engineer I say you want things to crush and break on impact. Only in crushing and breaking is the energy dissipated, otherwise everything is a spring so all energy stored is reflected (which is why suspension has shock absorbers). You get hit with the force of coming to a stop then it hits you again as things spring back into the original shape. Is not something you can "look at" and conclude any material or design is better than another. Is something that has to be built and tested.