Get network people to do network cabling - many electricians I've met can't tell the difference between CAT6 or CAT5e.
FYI - 10Gbe can run on CAT6 ... 37m. The catch is that the termination has to be done properly and cables cannot be neatly bundled together (to mitigate the effects of Alien Cross Talk)
FTP or more properly known as F/UTP cables are there for a reason. The foil/shield helps to block out external signals from interfering and internal signals from leaking. Not really recommend for home premises as the cable OD can be quite thick.
Speak to your cabling contractor and ask him stuff like what's NEXT(near end cross talk), insertion loss, ANEXT, max distance for 4 pair 100ohm twisted pair cables and you will be able to tell if he knows his stuff.
In case you're wondering, yes, I've been in the network cabling industry for about 5 years already.