I've had a Quarq for the past 2 years and because it's a tank (weight wise)
that's the reason to scrap a quarq?
for a few units that have spiders that are distinct from cranks, i've measured that the quarq adds about 60-90g over a regular spider. now, i guess that could be a 'boat anchor' for someone...
if you're using a DA stages, you're not exactly in weight-weenie territory. shimano cranks are awesome, but light they are not.