You really can't go wrong with the upgrade. I had the 10x5 and thought it was great. I upgraded to the p75/20low output combo and found it to be a big improvement. There's nothing sideways about it.
If you don't have any local dealers, try The Cable Company. I'm sure they have some stuff they can send you to demo.
If you don't have any local dealers, try The Cable Company. I'm sure they have some stuff they can send you to demo.