How to pick between swap aggregators when the rates look almost identical

Ran the same BTC to XMR swap through a few different sites last week and the quotes landed within a few bucks of each other. The whole "best rate" thing felt pointless, so stopped looking at the headline number. The rate you see at quote time changes on a floating quote. Many instant swaps use floating rates where the final rate shifts during confirmation or a volatile block window. On a two minute swap that barely matters. On something bigger, or when the network is jammed, it moves enough to wipe out the tiny edge you thought you were getting. What separates them is what happens when a swap stalls or you send funds on the wrong network. When a swap fails, time to refund dominates the experience. Partner quality matters more than a tiny rate edge. That's the part rate comparisons skip. Used a few over time, but what I keep coming back to is consistency. Skipping account setup and having reliable processing time has ended up mattering more than squeezing out a slightly better quote. When moving something time sensitive, having a platform that just works through the confirmation window is the deciding factor.