On the Lid Picker scale http://www.lidpicker.com/free-data/ both those helmets show rounder to very round shape. You may have more of an oval head, hence the problem. If I were you for $20 Lid Picker will give you a measuring kit, report and as a bonus free under helmet sunglasses so you can get a more definite head shape profile and matching helmet types.
Equitare solum equitare amplius
Hey, thanks for the tips. I like the LidPicker site. But I have a question. What the heck do I do with my $600 Shoei NeoTec helmet that is only 1 year old?
Some of the guys are gonna cringe at this, but I fixed the "hotspot" in a helmet(Maybe my Neotec)by using a small ballpeen hammer and GENTLY tapping on the inside where the discomfort was. If you can't get to it with the head of the hammer, use a piece of broom handle or something similar. Place that on the spot you want to alter then tap on that. Notice I said GENTLY TAP, not wail away like you're driving a tent stake. Anyway, it worked like a charm for me and the helmet remains comfortable.
I've used the back of a tablespoon and a little elbow grease. Works.