Actually for anyone who hasn't unlocked them yet most information is conflicting this is how I did it and how others have done it and it works you can get all the extra perfects and Ultras you want but its more of a headache then the bare minimum . After unlocking all 6 secret characters (Gen, Dan, Sakura, Cammy, Fei Long, Rose)
For Akuma you only need 1 perfect and no continues, No Ultra's needed. For Gouken Beat the game with Akuma (performance doesn't matter) then use whoever you like and its 2 perfects 3 Ultra finishes no continues.
Gouken and Akuma are easier to fight then Seth, I was able to spam fireballs with Ryu like I did with everyone else except for Seth and they went down pretty fast.
Everyone will find the best solution for them I found Ryu to be the best, you can spam fireballs usually on your first two opponents and get the perfects you need. And his Ultra Fireball is easy to connect.
Gouken is quite crazy you can use one of his throws to set up his Ultra or Super, his medium fireball is perfect anti air. With a little practice he is quite a deadly force.
For anyone who is looking for a TE stick and cant find one, the only real difference between the Hori Real Arcade Pro 3 and the Tournament Edition sticks are all Sawna buttons where Hori uses Hori made buttons, both have a Sawna stick. You can purchase the buttons online and just replace them in the Hori RAP3. The Hori can be found for about 90 US, don't confuse it with the Hori Fight stick 3 for 360 Users its Hori Real Arcade Pro EX, the Hori EX2 is the cheaper stick apparently the cheaper Hori sticks are harder to mod since the connectors are sodered in place and harder to swap out.
The Fight Pads I keep hearing different things, some people say they work others done, some say for PS3 just buy the USB Saturn controllers as they are alot better. For 360 I'm sure the Fight Pad is better then the normal controller by a whole lot.