the 2500 will produce more power at 1 ohm and as long as you have the electrical to back it up then you can run the amp at 1 ohm daily. Test have shown that at 1 ohm the 2500 is a BEAST. I've seen gains on the TL from adding batteries all the way up to 3 and even with those 3 batteries you'll still have a slight voltage drop but wont see any more gains from adding another battery. They do 2500 at 2 ohms yes but at 1 ohm they are estimated to do 3300 or more depending on electrical system. They are stronger than a Sundown 3000 at 1 ohm. Not saying anything bad about the sundowns of course cause you can still wire them down to .5 or .25 and murder the 2500 but at 1 ohm the Kicker wins. I have only gained 4 tenths from running 2 2500's at a stable load then 1 at 1 ohm. Do you know they will handle the power from personal experience? how much are you running to yours? and why do you suggest having the sub fully loaded? Doesnt that mean every option there is? I didnt think I would need the extra Xmas. Are you suggesting it because of the extra power it will make them flex more? And yeah I already have the electrical system to support the 2 2500's but they're running 4 12's right now and it's to cramped in the back of my explorer so I wanted to downgrade to 2 12's that can handle more power. I have to stick to 12's though because if I went up to 15's I only have space for 1 and still want to have a daily system more than an all out SPL vehicle. thanks for your help. anyboy else run them daily with this much power?