I have the setup you are going for, the 36" dish, motor, and QPH-031 LNB. Wit the limited experience I have I would suggest that the only change to make is the receiver. I have the Lifetime Ultra, it offered the most bang for the buck. Others may prefer Pansat, but the Fortec Lifetime Ultra has everything I need. The only other receiver I think about is the Coolest Pro , but because it comes with a universal remote. Also, the Pansat 2700a is on my list only because my Tivo support Pansat control.
It looks like your homework is going to pay off in that you are not likely to buy anything you will regret. Stick with that LNB, and 90cm dish, and motor, the receiver is the only thing to think about. Print out the specifications of both and put them side by side with a red pen. Check off the pluses of one over the other, including price. Then add up the checks and you will have your answer.