The best Habenero Peppers are Red Savina www.redsavina.com.
You can buy plants from several nurseries.

I have planted them, sliced them, dried them, and ground them up.
They are so hot that even wearing two pairs of gloves, painter's
gloves inside of dish washing gloves, you need tape your finger
nails so it does not get into and cracks. You also need a face
mask and protective eyeware. And after all of that your forehead
may be sore for a few days.

Is it worth it? I think so. If you add a few grains to soup so
that you get the taste and not the heat, you will be awestruck by
the delicious.

In addition they kill ants and other critters. Rabbits and deer
forage elsewhere. Moles don't like it either.

Dick