Just to carry on this thought, analogue stuff will often degrade gracefully when underpowered whereas digital stuff, more often than not, just turns bad or takes itself out of the equation by powering down - YMMV as to which is worse...
Additionally I have had trouble with a digital chorus (130mA) not playing well on a daisy chain even though the total load for all pedals was less than 200mA on a 500mA adapter.
Every time I'd have to power the pedal, switch the effect on, unplug and replug the power cable to the pedal then it worked all night.
Both these things in mind, I still tend to prefer digital delays and modulation (except phase), and currently have a digital dirt on my board. Go figure.