Speaking as someone who lives in the area :
Stonehaven : On a fine day is there a better place for a fun days golf ?, unfortunately the course is in REALLY poor condition and should be avoided.
Newmachar : "If its not wet" ? .... when is Newmachar never wet ? .... I really dont think you have to come all the way to Aberdeen to play Newmachar, every city in the UK has a Newmachar.
Deeside GC (Where did the Royal come from?) : Another course that is worth avoiding when wet, plus it used to be Private and the only time I have been able to play it, is in comps, opens etc.
Banchory is okay, but again after this summer will be very wet.
I know I mentioned Hazlehead which is a really nice course but the way the weather has been I would scratch it off the list as well.
Balnagask is very underrated in my opnion, even in the wettest of summers, always plays like a links course, and good fun.
The Kings Links has its moments (an excellent Spion Kop) and is fine if you like muni links courses.
So if you want courses in Aberdeen to add to Trump, RA, CB, Murcar, it would be Balnagask and King Links.
Otherwiise, head a little further north to Fraserburgh and Peterhead.
BTW, after another drenching at Trumps course yesterday, beware conditioning isnt what you would expect for a £150 course, and the fairways have been heavily sanded, and ....