Well thanks for this. BC IPAL's are the best value for myself and where I live. The IPAL pair would be the same price as a delivered 24UHT. So if the 21" version kept up with the 21IPALS down low then the 24 should be a better option for me if I can swing the payment right now. Above 40-50hz the IPALS run away from the 24" but I'm only after ULF in a sealed alignment.
Would @Ricci have time to ever test a 24uht?
I looked at possibly getting one and having one shipped to him. Although I would then have to get a quote for shipping from Ricci to myself in Australia. Either way I'm not