[RE-wrenches] Enphase sizing

[Jay]

Hi all

For those working with Enphase. 
How hard are people recommending pushing the DC/AC ratio?

Enphase has some pretty convincing data that even a 400 watt module on a 240watt inverter has very small clipping vs annual production  

Given that why would i recommend to a customer the IQ7A at 360va and quite a bit more expensive vs the 240va IQ7?  
Location would have something to do of course, tilt, yes. 
But it seems that unless you’re installing a really large module or their data is wrong, I’m not sure I see the advantage of the larger inverter?

I’m hoping there will be some counter views. 

Thanks
Jay
Peltz power.