Actually I advise everyone to just buy the currency itself instead of a miner as the ROI is mostly worse when buying a miner :-)
Decred has a splendid team, I have never had any doubt about them.
It's true for now.
Investing money directly into favorite coins are much better than buying rigs and mining to get coins.
Most of coins are un-profitable for miners ATM.
I really agree with what you say that investing money directly into your favorite coins is much better,
because if that was done for me it would be very profitable