They are not bad but I personally prefer to make my own. Buy the main ingredient that accounts for the majority of the effect and cap it up. Good to go.
I wish i could speak on Maxout, but I can't. I have used ProJym products for almost 6 months though now and still am glad I have never looked back. I feel a nice boost from the pwo, retain a good pump from it as well.
I really like the pre workouts pre-surge and razor8 by Allmax. I save them for leg day. Every other workout day I use D-spark and a small cup of green tea so my body doesn't become dependent on the stimulants.