I'm selling soon-to-be-outdated ASICs and buying the second batch of the next best thing (first batch is typically overpriced). There is usually a moment in time where the old tech still has demand on eBay/craigslist/etc and can raise enough cash to buy more hashrate with the new tech. The only mistake I made so far was to trust Zeus. I'll stick to buying only in-stock and independently tested hardware from now on.

However even with the increasing hashrate my revenue has been declining so ROI is still unlikely albeit more probable than if i just held on to my first purchase of Gridseeds from February. No easy money, what a surprise 

GPUs on the other hand just refuse to die, X11/X13 is almost as good as Scrypt was a few months ago, considering the lower power/cooling requirements. Might outlive a few more generations of ASICs.