A new supplier that I am going with this year is:
They have over 500 varieties of peppers, both seeds and live plants and tout themselves as "The Worlds Largest Selection of Chile and Sweet Pepper Plants"
Hmmm.... (I'm leafing through their paper catalog) on the back it states:
500 Varieties of Chile and Sweet peppers, 186 Tomatoes & 65 Eggplants
50+ Tomato seeds, and 120+ Pepper Seeds
~They were recommended by the guy on YOUTUBE who does the "Grow Your Greens" videos
PS: I just checked all the links I have showed you, and YES! Chiliplants.com has a BHUT JOLOKIA that looks like an extra long red habanero. Was this what you were looking for?
Now, for herbs and rare medicinal and related plants there is a place in Oregon that has helped me a number of times.
The owner, "Richo" Cech travels the world looking for special plants and seeds of all sorts. here is that one:
Also - for specialty ASIAN plants and vegetables such as Pak Choi, Malabar Spinach (both green and red), Snow Peas, and even RICE! I highly recommend Kitazawa Seed Company
*Kitazawa Seeds are proud of their traditional "Dento Yasai" heirloom quality varieties for traditional oriental produce, and rightfully so.
I believe that none of these will dissappoint