[Linus]

I have Verizon FIOS. 30-35MB both up and down. Now that said, the wireless that's built in is ok (reaches to the front yard where I spend most of my day) but now and again quits during the day (I suspect a nearby neighbour who has a wireless handset phone).

Personally, things like MiFi and/or Sprint's 4G are meant for laptops on the road. For me I cannot conceive of them being ok for home use, especially with that many computers. You'd be, IMO, better off with cable or DSL and getting a wireless router hooked up to those. It ends up being cheaper and easier to control.

One thing to note: wireless networks like 3G and 4G tend to have high latency, which is ok for phones and tablets but tends to suck for many of the apps we run on computers.