[2enty3]

I auditioned the PRO900 over the summer and I thought " OH GOD. THIS IS WHAT I WAS LOOKING FOR."
THAT BASS SLAM. THAT IMPACT. THAT " OH GOD I THINK I JUST WENT DEAF FROM ALL THIS BASS!"
 
Yes, my reaction deserved capslock. That's how mind blowing it was. While I was there, I also tried out the DJ1Pro, but was less than impressed after listening to the PRO 900. The 900 had impact, whereas the DJ1's were just boomy with no solid force behind it.
 
So I was just looking for some opinions, detailed or not, about how the HFI-780/580 and the PRO2500 compare to the PRO900. Obviously due to their lower price range, they are a lot more appealing, and if they sound as much like the 900's as some people have said, i would rather get those.

 

[Jibbie]

The 580 has similar bass quantity as the Pro 900, but it isn't as refined nor does it extend as deep.  Soundstage is nowhere near as wide as the Pro 900's either.  The 780 is a bit more neutral than the two, but still has solid bass, but if you were amazed by the Pro 900's bass, you'll be less than impressed by the bass of the 780.  Can't comment on the 2500, but I speculate that, as an open can, it also can't compare to the Pro 900's bass impact and depth.
 
FYI, I also had the same reaction when I first heard the Pro 900s, they are amazing basshead cans. Enjoy them