Fantastic plugin and author

Pros:
Works with the latest wp version, yes!
Clearly structured menu options!
Non-obtrusive (like so many others), this hides away under Settings (like other plugins should too), not filling up the admin bar!
Very well thought through this plugin!
Well coded!
Ueber fast author support! Without asking for cash, like so many others.
(thinking about it, I can’t recall i saw ANY pitch to buy anything, i have to look for upgrade things)

Only Con i see:
It isn’t google fast (of course not), but waiting 13 seconds for results? On a vps? What will that be on shared hosting? There are probably settings to give relevanssi priority over other server processes, I have to look deeper into it. Either way: if the user waits, he gets perfect results, even highlighted!

So, in total: Much recommended!