It is currently my favorite and I see no reason to pay more for anything else, even though I could afford it.Exactly, this balancing act seems so elusive and most manufacturers/designers of most audio gears just do not get it, hence they depend upon embellishments to market their products.
The day I hear a cartridge that can better the ART9 without upsetting the balance...my enthusiasm in cartridges will again get a spark. Till then I am a laid back audiophile when it comes to cartridges.
I hear that Micromagic Magic Diamond is a cart to look out for.
Another nice cart that I heard the other day is Acoustical Systems "The Archon". These are all carts made by boutique audio companies who are trying to create products which are less hifi and more musically correct (there are no dearth of "hifi" sounding carts anyway) :-).