Qualitywise the Filco is the best out of all your options. Is it worth the extra 100$? That's a question only your wallet can awnser.
If money is an issue, get a fullsize leopold or a tenkeyless CM Rapidfire. They both have minor disadvantages (sucky stabiliziers / a ****load of ugly branding) but are very close to the filco.
If you want the best keyboard and you don't mind paying that extra $, get the filco.
Remember, you will probably own this keyboard for a long time.
And don't settle for backlit keyboards ... get a lamp instead

But I'm probably just another Filco fanboy ... and I blame geekhack for that!