Thanks everyone who contributed!
So i made the plunge, i ended up going with the 55-250 STM, found one for 160$ CAD that was new from a T7i kit.
When ready, I'll use the money saved towards a long prime or better aperture zoom later (if needed).
I still have to pick up the 80D (it just arrived at the parcel service), but threw it on the XSi and the STM is dead silent.
Looking forward to getting my hands on the 80D, should be fun!
Thanks again everyone!