@dhcod No bass issues. I've mounted cartridges I can't afford on it and I was blown away by how balanced and transparent this arm sounds compared to many high priced arms I've used in the past. People are squeamish about Uni's for some reason. I've always preferred them. We all hear differently.
I agree with your comment on balance and transparency. I actually use the Naim Aro unipivot daily ( along with Dynavector 501, FR64S & Eminent Technology ET2 modded ) which I preferred to the Graham.
The upsides of a true unipivot are that they have far less stiction than arms with gimbal bearings - this CAN mean more fluidity, speed and coherency when the cartridge is matched.
Like any arm they are not perfect - I can get more extended, deeper, tighter bass out of the FR64S & Dynavector than the Aro.
As an aside my turntable that I use for all these arms has been extensively auditioned in a controlled system flat to 13hz. I doubt there are many if any systems on this forum that achieve this.
My point was that unipivots require more care in matching the cartridge to the arm if you want to achieve extended, accurate bottom end simply because they dont have gimbal bearings gripping the arm/cartidge when the cartridge gets excited.
My suggestion is look at the expensive cartridges that you liked best but cant afford, and see if there are common attributes on mass, compliance, gain ( for the Lamm ) that give you pointers as to which cartrdiges are likely to be more successful.
Harbeth 40's might be an alternate solution.