Jabeneros are the hottest pepper period. Hotter than thai, chili, or cayenne. Jalepenos are mild by comparison. The seeds are not where the "hotness" lives. The oil (Capsaicin oil) is actually in the veins of the pepper. You can buy hot sauce on the internet that is 4-5 million
Scoville units. Pure Capsaicin is 16 million.