Passenger Trains > SEPTA Sprinter Status

Anyone (with insider perspectives ?) have insights on the Sprinter's first weeks of service ?  I've personally seen #901 and #903 in service, with #901 a regular on the evening 'Great Valley Flyer' (probably on the AM counterpart as well).  

I'd be curious to hear how they're performing, what crews think of them, etc. .   I have to imagine they 'get up an go' much better than the AEM-7s - always seemed like quick acceleration was not their strength.   

Charlie