it seems like the sirrus runs a little big for it's size. if the top tube being up in your business is too uncomfortable, i'd go with the next size down. you can adjust the stem/replace with longer/shorter, and otherwise adjust the components to fit whichever frame size you get.
i have an older sirrus, a 2011 elite disc, and i'm 5'11 - i have a medium and probably wouldn't have rather a large. i don't mind getting friendly with the top tube, but the reach is kinda long on this bike as it is.
then again, i've converted mine to a drop bar bike, so that's going to mess with the fitment when it comes to reach and whatnot, so ymmv.
my elite disc was stock and super high mileage when i got it, so i've been slowly replacing/upgrading components as i'm able. i have a few more things in the works (higher volume tires, better calipers, shorter stem with more rise), but i'm pretty happy with this $150 craigslist rig!