Hail bardes.dk,
My opinion is that they stack up well today as they did when they came out. I have never heard anything that has the true bass and colourless sound in the size group.
They crop up on EBAY in groups and in spurts, oddly enough, such as other vintage infinities do. You will see nothing for a month or so, then a couple pop up.
They are on my to get list as soon as a few other projects that I have going on come to completion.
Vito