If you're increasing wifi coverage than using a powerful AP like ubiquiti's outdoor AP isnt going to help because of client transmit limitations however their indoor APs can be powered through POE. There are many reviews on APs but they are only in the forums so you may have to search.
Cisco, Ruckus, Ubiquiti, mikrotik all make APs just dont use the max transmit power as a benchmark because the maximum a consumer wifi client can do is 500mw while many do 100mw and mobiles around 50mw. This isnt a constant but its from what has been revealed from technical specs. Im just giving you an idea of their transmit powers so you can plan your network better for coverages.
When it comes to wifi other than some features both consumer and enterprise are in the same boat for range, performance and stability because of the laws of physics so they differ by antenna, radio chip quality and their wifi design. Ruckus for example design theirs for density rather than range. So before you buy an AP or wifi router to use as an AP take a look at the wifi chip used and the antennas provided or which you can use with it. If you need specific features it significantly narrows the list. POE in is very helpful if you have multiple APs since you dont need those bulky plugs.
You also get the odd models from consumer brands that are APs with an ethernet port or 2 and POE in. Not many consumers consider APs because most homes have 1 wifi router + modem or a single all in one box for their home and they often have extra left over wifi routers to use as an AP.
The netgear R7000 has good hardware and some linksys WRT1900AC versions have good harwdare too. ASUS may not have the best hardware but their firmware tends to be better and netgear R7000 supports a fork of RMerlin firmware however do look at APs as well.