So if I went with the rocket m2, I would then need antennas, and a poe solution.

The PoE solution has been talked about before, but what antennas are folks running with these?

I see some really nice, but pricey, sector antennas on Amazon.... or are people throwing an omni on these?

I've seen everything from Omin's to high gain directionals used.

I'm looking at SECTOR's for a tower site (The NanoStations are basically all in one sector setups as well)

The AirGrid has a high gain unit built in, as to the NanoBeam/NanoBridge (dish based)

For demonstrations ive been using just small panel antennas (similar to NanoStation) and  small low gain omni's (on a bullet)  and for long range I did some testing with a grid (single polarity) that was originally hooked up to a Linksys before being swapped out.

A note about the 2 antenna ports, when running in a diversity mode they are intended to receive different paths between two similar type antennas (aka 2 omni, or 2 different polarities on a dish, etc) from the same sending station.

This 'multi antenna' ability has been (ab)used on the Linksys to use an omni and a directional dish, it works, but it wasn't how the devices were meant to operate.(Someone posted a much better explanation some time back in the forum)

So while it works keep in mind the unit will take the strongest signal it gets on either antenna.  This means one port could 100% mask another port (this could be what you want in some cases) while a remote party is transmitting.

Ive already seen setups of Ubiquiti do the same, and again it works, just be aware of the limitation that if two people are shouting at you  than you can only hear the loudest person.

If you try and ramp up to the much higher speeds (150mps) than you actually need both ports pointed to the same direction as it relies on the multi-path multi-polarity to ramp up to higher speeds (802.11n)

I am using a Ubiquity AM-2G16-90 sector antenna.  It is a 90 degree sector with 15 db gain.  The 90 degrees is subjective (The UBNT datasheet lists this as a -6db value).

I have links established with this node at 13 and 8 miles.  The 13 mile link has a similar setup on the other end and works quite well.  (20 db s/n ratio of 13 miles)

I have not go a any experience with any other antennas and the rocket but I can tell you that this setup works. 

Clint, AE5CA

I am very impressed with the performance of the Rocket/Sector Antenna combination.  If you need the wider coverage angle then I recommend this combination.

I will tell you that my favorite UBNT device is the NanoStationM2.  I have lso used a pair of these on my 13 mile link.  With excellent results.  

I have been very unimpressed by the AirGridM2.  The BulletM2 is a decent device if you have an existing antenna that you want to use.  I replaced a Linksys box with a Bullet while using the same antenna.  The performance was significantly better with the Bullet both on receive and on transmit But its performance is not as good as the Rocket or NanoStation even with a grid antenna.  

With a NanoStation on one side of my 13 mile link and an AirGrid on the other, the Nano was seeing the AirGrid with a high LQ.  The AirGrid did not even detect the Nano.  After switching the AirGrid for another Nano, I had a working link.  The Rocket/Sector antenna combo has given me a few extra db of signal.

My thought is the NanoBeam is going to be a hot performer for long distance links.  I am looking forward to it being supported in the next release.

Having used the Ubiquiti gear, I would be hard pressed to use the Linksys Hardware in an outdoor setting.  I believe that by the time I get a Linksys box, a waterproof enclosure, coax cables, and antennas, the Ubiquity is cheaper to install as well.  

Clint, AE5CA