question about peak current and watts for amp
I am looking for MF integrated amp. The local dealer told me a new integrated MF A3.5 will come out on this June with price $1600. It has 125 Watts to 8 ohms and 200 watts to 4 ohms, 70amp peak current, all the other spec is as same as A5. It has the circuit used in A5. At $1600, I can find the used A308 with 150 watts to 8 ohms and 300 watts to 4 ohms, but less peak current 40amp. My question is, for watts and peak current, which one is more important. I want to use it to drive Magnepan MG1.6 in the future. Thanks!