In my experiance, get the most power your wallet will allow. It save you money in the long run. Meaning, say you get the lower power model, next week you see a deal on a pair of speakers that have 3 time the power handling. Now your looking to upgrade amps again. High current power amps stay relevant for decades. In the realm of amplification go big so your not just wasting money with small upgrades. Get a beast that is more than you will ever need.