To ac, or not to ac...

Hi guys. I am currently running Netgear WNDR3700v1 that has been running pretty badly lately (well, to be honest before it went bad, i never had to reboot the router - it's been running for months with no any administration). I have been fighting with Netgear for the past 3 months, but as always it was pretty much a lost cause since the beginning - after a year you are toasted and it seems their routers are build to last 1 year + 1 day.

Regardless, I have been looking for a new router and reading reviews here and on the web in general here is the outcome:

- Netgear R6300 - not bad review from here, but about 5% 1-star reviews on amazon with many complaining about constantly rebooting, loosing connection, etc.

- Netgear wndr4700 - here it is reported as uneven wireless performance and considering I have pretty much devices covering b/g/n not really a good choice. Most interestingly up link is better than the down link in a magnitude of 2x - 3x?!?!

- Cisco EA6500 - relatovely good review here, but at 30% 1-star review at amazon makes it a no-no. Many complaints about the performance and loosing connection

- ASUS RT-AC66U - Big imbalance in wireless up & down throughput

So, really the question is:

1. Do I really need ac...I'd say no, but most of the ac routers has the power (not necessarily true reading the reviews). I dont have any ac devices.

2. What would be the best router??? at least from those that I looked at as above?

This is what I have connected: Wireless - 3 iPhones 5, 2 iPads - 2nd Gen, Wii, Apple TV 2 months old, 2 Macbook Pro 1 year old, 2 Windows Laptops a few months old, 2 Smart TVs - a few months old - mainly Netflix; Wired - Linux server, Buffalo NAS, 2 printers, iMac, Slingbox

About 2700 sq ft 3 story townhouse. Router is on the 3rd floor. Verizon FiOS 75/35.

Any help would be greatly appreciated!