It depends on pricing and tradeoffs. Presumably the choice is between the 16-core Ryzen or the 10/12-core Intel chips. The 8 core might be interesting if all you're looking for is pcie lanes, but otherwise it might be smarter to get a 1700 now and upgrade to what we hope are higher clocked Zens next year, and then again the year after.... That's the nice thing about keeping your sockets stable. Of course, the bad thing is that you have to bet on AMD's execution....
For me, the questions on the table are how high Intel and Ryzen parts clock, how they're priced, and how well they perform compared to each other for the apps that I use. Without that data, it's hard to make a choice. I'm paying attention to both (though I expect AMD to be silent until it's clear that Intel is done hurrying itself to market and leaking details along the way).
Given I can only make assumptions, I assume that the 12-core Intel will clock significantly higher than the Ryzen part, both stock and OC, and that it will enjoy a possibly significant IPC advantage. Maybe enough to make up for the 25% fewer cores. At which point, Intel looks good in comparison. At least until they share the price of the thing. I don't expect Ryzen to OC past 4G (and maybe not even up to that point). All in all, I expect Ryzen to disappoint in clocks, and Intel to disappoint in price, and that I'll skip both, but I am paying attention and hoping that AMD can bump clocks a bit, and that Intel will bring its pricing out of the thermosphere.