[R-390] HP-8640B vs. HP-8654A/8655A/11710B

[Barry]

Anyone on the list have any experience with an HP8654A/8655A/11710B combination?  The reason I ask is I have an 8654A/8655A and am thinking of getting the 11710B to get the lower parts of the HF range and was wondering if I'd be better off with this or getting an 8640B.  The combo will give me a greater low end (down to 10kc) and the footprint is a bit smaller, but wondering if there are any other (dis)advantages.

Basically, I'm tired of lugging the 606A up to the bench... :)

Thanks,
Barry - N4BUQ