PAS-2, PAS-3x versus Eico HF-85

Hey everyone:

I was just wondering on what people's thoughts were on these two vintage pre-amps. I tried searching for a thread that did a direct comparison but nothing came up although when one name came up as an option, so did the other one.

My main concern is the phono-stage since I've been listening to the Musical Surroundings Phonomena and it is sounding a little and bright, but it everything is kept in track and it is quite tight.

Right now I actually have a PAS-3 unmodded with stock Telefunken 12AX7's inside but I will start looking for an HF-85 if people say it does sound better.

Using Maggies and Cary Sixpacs right now and a Technics 1210-M5G turntable. I listen to mostly vocals and classic rock with a zest of Classical here and there.

Also, anyone with experience in modding a PAS-3, I'd love to hear some feedback as to what I shoul do first to get the most out of it and work my way down that mod list.

Thanks everyone in advance for your input!

P.S. - How do I tell if the the Dynaco was a kit of factory built? Is there a surefire way? Or do I have to just study the build quality?