I had the HFi-2400. I don't tend to post negative reviews. But I did not like them. They were exceedingly unnatural to my ears (whatever voodoo S-Logic is, I don't like it).
If you can audition a few of these headphones, that may help you make your decision. None of these headphones are deficient in any way, but they are all different, and personal preference is widely varied. I tend to like very neutral, precise headphones - which, if weighted anywhere would be towards the mids. I don't game, I don't watch movies - so keep those factors in mind.