I was wondering which one of these would be best. I was planning on getting an Ampeg SVT-810, but I was thinking, If I don't need the watts right now can I get a 410 instead and add another 410 later on? If I were to do the 410 idea instead of getting the 810, would I need a certain kind of head? Both these cabs are at 4 ohms? How many ohms would the head need to take? Lets say I want to get a 410 for now and use that for a while until I get some money for another 410. would I have to buy a whole other head that can handle another cab? Or are they heads out there that can handle either two cabs or one huge 810 already? If so, how can I know its the right one for whichever ampeg setup I choose? If Im making no sense asks questions and ill try making it clearer on what I am trying to ask. Kinda late right now but I'm anxious to figure this out, hopefully they'll be some responses when I check back tomorrow afternoon.