The question you have to ask yourself is: Is price a major issue or not. Are you tight on money at the end of month or not ?
If you are living in fine conditions, then go and take the filco. Is it overpriced compared to alternatives ? Probably, if not certainly. Is it worth his money ? Hell yes.
You litteraly can't go wrong with filco. It's like going IBM in the 80s. Or mercedes if you want a car.
You'll enjoy your filco everyday because it's one of the best keyboard on the market, with almost no flaws, and you know it. You know you went a little crazy to enjoy yourself by typing on a nice piece of machinery. You probably will never regret it. And it's worth it, just for having that feeling of having made a good choice.
If you take something else, you'll probably always think, « what if I'd have gone filco instead ? ».
If it's the only keyboard you are buying, then why not get one of the best ? And if you'll end up with a lot of keyboards, you'll get at least one filco no matter what, almost everyone on this board has a filco. So just go ahead.
It's the little pleasures that make life enjoyable. Like typing on your filco everyday

.
It's also the most standart keyboard, so a lot of custom keycaps/case will fist be designed for a filco tkl.
Note that this was my thought process when buying my first keyboard (a filco). This doesn't mean that other keyboard are worse than filco. But filco has the reputation and hype no other keyboard has.
If you want a good price/quality ratio, get a quickfire storm

.
Damn myself, now I want to buy a HHKB xD.