Just want to report that I got around to trying out exch.cx today and it worked exceptionally well.

Minus transaction/gas fees, the overall exchange had a fee of about 1%. The exchange itself was just about as 'instant' as it gets. The fact that no account is required is a definite plus.

Was surprised to see that this service has been around since 2014... coincidentally their forum account was registered on the same day as mine.

Will definitely be using exch.cx again in the future when quick swaps are required.