Depends on what you like shooting and your budget. Did the Chief Financial Officer tell you how much is available yet and if not cold you maybe do some extra chores?
The Sigma ART range have always been highly rated.
Tamron have come out with a series of similar f1.8 lenses and I have shot with the 45mm (yes strange focal distance) and MAN was it sharp! The sharpest lens I have ever used.
But may need to get going on those chores.
I'l post a link here in a minute as an edit because if I go looking now the system will log me out for being inactive.
Link to
Amazon but I am sure you can get it elsewhere
From my experience with it I find it hard to believe there is anything under a 4 star review - but I guess we are all different.