Which Cam for my AMC 390?

I'm rebuilding my '69 390 motor and need a Cam recommendation. I am going with stock heads and stock intake and probably stock exhaust manifolds though considering headers. Compression will be near stock at 10.2. I want more of a performance cam with an aggressive lope. It is going in an SC/Rambler with power disc brakes. I want street manners but want that aggressive sound. Appreciate your suggestions.

10.2 with stock heads is gonna mean av-gas.

A rule of thumb dating back to the era of he engine and still valid, is stay under .500 lift at the valve and the OEM Valve train is more than adequate to use with the cam of choice.
As to the 10.2 compression, whether it is usable or not depends on the availability of the octane of premium grade gasoline.
If the fuel is in the 93 to 95 octane rating range 10.2 on cast iron heads is a tunable range to be in. However If anything less expect a problem.
I have that engine in a 1970 Javelin with the fuel availability of 91 octane so I have chosen to use open chamber heads and drop the compression to a little over 9:1 and with a good tune 91 octane is quite usable and still meet the requirements that you are listing.
I prefer Iskenderian as cam source for a variety of reasons and am using the Iskenderian 270HL and it too meets the requirements you are asking for. It is only one of the 4 our so cams I have used from Iskenderian to build engines around and I have been satisfied with all of them. The latest engine is using a 270/280 Hydraulic flat tappet cam and is showing good signs as being tunable for the street.
Good luck with your project, between 2 engines I have put about 100,000 miles on them satisfactorily.

Isky 270 or 280.

I've go the Summit 8600 in my SC/Rambler with an otherwise totally stock 390 long block. Running Eddy 850, R4B, and Hooker long tube headers. Nice bumpy idle and plenty of power, no mods to the valve train.