Atama
ShoYoRoll
Gameness
Koral
Keiko Raca
Howard Combat Kimonos
On The Mat (Lucky Gi and OTM Midievil)
Rednose
Padilla & Sons
War
Dragao
Vitamins and Minerals
Warrior-One
Bad Boy
Kikskin
Krugans
Ouano
Not quite 20 off the top of my head, but close... And more all the time. These aren't all of the ones I've seen, but I didn't add the ones I didn't care for or that looked really cheap.
I either have now or have had the following brands:
Lucky Gi (OTM)
HCK Competition Single Weave
Gameness Pearl and Platinum
Padilla and Sons Gold Weave
Koral MKM (sold this one... didn't fit me well)
Atama Mundial #7
well I really am very very happy with Shureido brand.. they are an Okinawan co. and do make a very very high quality gi.
but i had good luck with the tiger claw one I had for about 6 years.
Best karate uniform for impressing the snobs: Shureido, Tokaido
Best karate uniform if you like the Shotokan fit: Tokon
Best karate uniform if you have little $ in your wallet but you still want a nice uniform: ProForce (seriously) 14 oz brushed cotton, Kwon 16 oz "Kata"
Best karate uniform for extreme durability: ProForce Diamond
Best karate uniform for stocking your commercial dojo: KI lightweight or ProForce 6 oz