Sigma 10-20 vs Nikon 10-24

[V8burble]

I'm thinking of hiring one of these for a week from Stewart (LFH)... but which one :shrug: I'll be using it for relatively close focus 'fun' looking down on people shots (single subject that is) indoors with studio lights at around the f/7.1-f/9 range. I'm looking for sharpness and detail at around mid-3/4 zoom.

Any advice in the choice (apart from the 10-20 being a bit cheaper to hire) would be a help, especially from those that have used both

Thanks