Really really really wish I had the money to buy a few FW 18.3's. That guy is an amazing craftsman. I use to think Seaton had the best finishes, but Funky Waves takes the cake now in my opinion. Speaking on appearance alone as I have not heard either.
As far as fan boy goes butcher.... I own none of the subs I would have bought over your F113. I'm sure they are great subs. BUT, from everything I have read they just don't stack up to what you could have got for less money. Sorry, I'll regurgitate numbers based on fact all day long. There is a reason people say sub x is better than sub y on a regular basis...because it is. Sure...there are your fan boys out there, but you can read between the lines pretty easily. I have a Rythmik F15. I love it. But, I won't pretend that a submersive, FW, SVS Ultra, wouldn't blow the doors off it in output. Fact are facts man. You bought 2 great subs...just wouldn't have been a lot of other peoples choice who are on here a lot for $5000. Enjoy them, I'm sure they'll do you proud.