both have fairly active forums, but the advice you got above is good. NF and Deadwood will run through September this year.
I did Deadwood last year at 1100 and it was enjoyable, not great, but enjoyable. If you want scenery and mellow rapids, go deadwood (all the harder ones were wood choked, except 2, one of which I walked and the other I put in below a log and enjoyed the long runout). The shuttle is long and fairly rough.
If you want action, strap on a big pair and put in on the NF.
SF Canyon & Staircase are a good play runs and they're running slightly higher than normal for this time of year which is a good thing.