hey ok im wondering what is the difference between 2 ohms and 4 ohms which one will hit the hardest, im getting 2 12" w3v3's and i was wondering what kind of amp is good to go along with that help me out plz
Only "real" difference it makes is what amplifiers will provide appropriate power to your subwoofers.
Since you have the option for 2ohm and 4ohm voice coils.....I'd take a look at amplifiers first and decide what amplifier you want to purchase. From there you can decide whether 2ohm or 4ohm subwoofers would be more appropriate for your application.
Depends on how much you are actually looking to spend, what features you want the amplifier to possess and if you want to purchase an amplifier that has the capability/flexibility to allow for future upgrades or if you are simply looking to power your current subwoofers.