hmm lol. i know there both great subs. i was just wondering which one shines a little more than th other one Maybe one will be a db louder in xx frequency range, while the other is louder in another range, but your enclosure is going to make the biggest difference. When I say maybe, that's a big maybe that I'm pretty much pulling outta my ass. At this point I would take weight (if there is any significant difference, neo lighter?) and the companies into consideration. Personally it would be a tough choice for me, I have used products from both ssa and fi, loved them, no issues. I've never had to deal with fi for any problems or anything, but everything I read, hear, and see is that their customer service is great, hell Nick is on the forums all the time, dropping in the chat everyday or so. I've purchased new icons from ssa and everything went smoothly, no issues, loved the product. Bought my xcons used, no problems, sound great. Mark and Aaron have always been easy to get ahold of for anything I needed, certainly helped me out when they could. So as Aaron said, flip a coin.