FYI, I was with Richidoo on this trip to hear the F208's and I thought Erik was a great host for us. I owned the F30's when the Performa line first came out. I loved the bass and mids but the highs were too harsh for me (~10 years ago, on whatever system it was at the time)... I can't directly compare the F30's to the F208's on memory but I can say overall, they are MUCH more refined sounding.
I agree with Rich's assessment for the most part.. However, I heard a lot of detail in the bass, maybe more than Rich... and I wasn't noticing the port so much. Bass is highly subject to the room. The room we listened in had no intentional acoustic treatment.
As to the highs, I am used to laser precision imaging and spectacular mids with impact from my current speakers (Piega C8 LTD) and I missed some of that with the F208's. However, the Piega's have a flat coaxial ribbon mid and tweeter panel rather than cones and domes. So, a difference in how they sound is expected. They didn't leave out details, just presented it a little more softly than I'm used to.. making them easier to crank up and enjoy even on bad recordings.
I could not get over how hard it was NOT to just enjoy the music with these speakers. They are great to just enjoy the beat and hear the nuances, tune in a little to some detail and get right back into the message of the song.
IF you are genuinely interested in listening to MUSIC, these are a great end destination to your audio journey. That is indeed a big IF. Most audiophiles really do love hearing what our gear can do and experimenting with the sound of it. I feel I have had a nice journey finding the exact sound I like. It just so happens Kevin Voecks has a similar ear and lots of R&D money behind him so I am lucky to have found this speaker. ;)