If you have 802/11n windows machines, then you need an 802.11n wifi router. Mac computers are all 802.11n as well.
You could get an Apple wifi router as they are nice simultaneous dual band 802.11n wifi routers. But you can also get just about any other make that suits you.
I use a Netgear WNDR4500 (aka the Netgear N900) at my house for wifi - everything I have is wifi. A mix of 802.11g and 802.11n devices (TV, PS3, MacBook Pro, old Windows Vista desktop, printers, iPhone(s), iPad - the only thing connected by a cable is the N900 router to the AT&T residential gateway).
Depending on how many devices you have to connect and what they are capable of will help you decide. I wanted simultaneous dual band (ie it can use both the 2.4Ghz and the 5Ghz bands at the same time) as I have a mix of g and n speed items and some of the n are restricted to one band only. Simultaneous dual band will cost more than non-simultaneous dual band (ie. routers with both frequencies, but only one can be used at any given time).
Bottom line is that your Mac's do not need anything particularly special to them - they use 802.11n wifi and 802.11n (or a or b or g) wifi is the same no matter what OS you use on what machine. And if you can get one machine to connect, you should be able to get any machine to connect. Over the past dozen years I've used Apple routers, Belkin, dLink, NetGear, Buffalo - never had a problem connecting a mix of windows and Apple OS clients to any of them.
P.S. just going between my N900 router and my MBP, I get ~144Mbs indicated - my bottleneck is still the copper cable from the house to the fibreoptic link at the street).