It's been two years since I've done TP for mobile and I'm thinking about putting it on both my 650 and SP4. I've never done it for a pc before. Is it DD worthy?
Current production build is very stable and is reliable to be a daily driver. while current fast ring and slow rings insider builds are still in a very early stages of development with huge stability issues.
If you are eager to join insiders yet again, i suggest you to join insiders Release Preview ring , as this is the most stable in comparison to slow & fast rings.
Not to say that that's for you, but I'm using last week's fast ring update, and it's pretty solid. No major issues, only hanged once - promptly resolved with a soft reset.
Only major gripes are Facebook and PocketCasts (but I guess the apps are faulty).