Gord's Saturns are $6,000, so all three amps are comparable in price. The only other PX25 I've heard of is the Tron, made in the UK - I don't know if it's available over here.
I obviously have an Audion bias, but I'd think long and hard about the Art Audio. Joe Fratus was the first to build a commercial amp around the modern KR PX25 tube, and he is one seriously good amp designer. Gord Rankin swears by the new TJ tube, but in my amp they are notably inferior to the KRs - I don't know if they have different operating points though. I haven't seen many comments on the Saturns.
Joe and Gord are both on this continent and are very approachable, why not give them each a call and let them talk about their babies? While you're at it, call Randy Bankert at OSS Audio - the NA distributor for Audion.
Based on other Art Audio amps I've heard, the two Audion PX25's I've had in my system, and my Wavelength amps - I'd bet hard cash on all of the three amps being very good.
Factor in dealer support as well. If you can find a local dealer for any of the lines it will really help. If not, buying from a manufacturer on this continent is a hedge against disaster. I had shipping damage in my Audion, and without a competent local dealer I'd have been in trouble.
I obviously have an Audion bias, but I'd think long and hard about the Art Audio. Joe Fratus was the first to build a commercial amp around the modern KR PX25 tube, and he is one seriously good amp designer. Gord Rankin swears by the new TJ tube, but in my amp they are notably inferior to the KRs - I don't know if they have different operating points though. I haven't seen many comments on the Saturns.
Joe and Gord are both on this continent and are very approachable, why not give them each a call and let them talk about their babies? While you're at it, call Randy Bankert at OSS Audio - the NA distributor for Audion.
Based on other Art Audio amps I've heard, the two Audion PX25's I've had in my system, and my Wavelength amps - I'd bet hard cash on all of the three amps being very good.
Factor in dealer support as well. If you can find a local dealer for any of the lines it will really help. If not, buying from a manufacturer on this continent is a hedge against disaster. I had shipping damage in my Audion, and without a competent local dealer I'd have been in trouble.