Can’t speak to the ART-9. I’m running the AN IQ3 on my Nottingham Interspace Jr. with stock arm. At approximately $1200 U.S., I’m not sure if I would consider the IQ3 an "inexpensive" cartridge but then that’s a matter of opinion.
Also, the IQ3 is manufactured by Goldring for Audio Note and I believe current production for the IQ3 has taken a backseat to Goldring’s products which makes the IQ3 difficult to obtain unless your audio dealer happens to have one in stock.
According to Peter Qvortrup, you’d have to move up to a MC (reference is probably to an AN cart), to achieve better sound.
Also, the IQ3 is manufactured by Goldring for Audio Note and I believe current production for the IQ3 has taken a backseat to Goldring’s products which makes the IQ3 difficult to obtain unless your audio dealer happens to have one in stock.
According to Peter Qvortrup, you’d have to move up to a MC (reference is probably to an AN cart), to achieve better sound.