Hey tzvia, congrats on the 40 lb weight loss, that is fantastic! I am very impressed.
I do use very nice shorts, and you're right, it can make a huge difference, sometimes more than the saddle I think. The brand I have that has a slightly thicker chamois allows me to go longer before the pain starts, but the pain still starts! It's still early season for me (was snowing at my house again this morning, ick), so I haven't given it more than a few rides. Wondering how many I need to do before I throw in the towel on this saddle.
I'll look into the RXL...