Hey buddy! I completely understand your situation of having to look for correct underwear size. There are various brands available with their unique size. But make sure that you know your size very well before you try any brand and also don't forget to check out the size chart available on the product page. Check men's underwear online stores like Mensuas.com,
Skiviez.com, Erogenos.com, Cheapundies etc to get the actual solution for your profile.