Never used a coin tumbler yet. But I'm about to make a substantially larger purchase than I have previously. I assume the best time to employ a tumbler is between your wallet and the destination DNM?
Which services come recommended? Also if you can tell me other basics of the process I'll appreciate it.
I've been fine with grams light (lite?) which is pretty easy to use. As you'd imagine, it's just pasting in one address and depositing into the one it gives you. There's 2.5% commission though, and for what its worth I'd still say its unnecessary.
As for when to tumble, I think breaking the link between localbitcoins or whatever and your wallet is safer than between your wallet and the market.