Islandguy,does that shop still have the bigger one that you mentioned?
First let me revise my statement after seeing Mattew's FG from a wider angle, as per above post it's bigger than I imagined from the close-ups -- so in fact I would have to say the one I saw in my LFS wasn't twice as big, though it was quite a big bigger (and much older too, as I do recall it had lost quite a bit of shine and coloration compared to younger FG's -- big as it already is Matthew's FG is still kinda of a young'un, so he's going to get even more massive under his good care. Mine's hopefully on the same track but he's even younger and closer to 8" or 9". Unsurprisingly he's grown at twice the rate of my NTT.
Hope you get one, they really are one of the ultimate monster tank cleaners and have some character too, if occasionally spookish.
In fact I haven't been by that shop for a while, as I've been dealing with another a lot that sold me my recently cracked tank. I'll stop by there maybe this weekend, but for now here's another good size one at the LFS that sold me my tank). I'd reckon it's about the same size/age as Mattew's beauty. Some pretty big Dats in there too.