I am using an XXV Maxximus for daily and it is freakin sweet. It delivers the power for hours.The soundstream is not good for daily, it is meant for 16v systems since it draws alot of power.
The MA also draws alot so I dont recommend that for daily.
If you use DD get this years 12v versions as the regular DDz1A is really meant for 16v but does do good on 12v, the 12v is just more efiecient on a daily system.
The Sampson is a good amp but really likes 16v systems. I would stick with Goliaths or a Maxximus.