rb 951-2n vs rb 941-2nd vs 941-2ndtc wireless PHY performance

Hi, rb951-2n was not exactly famous for its RF-performance.

Since there is a new line of low-cost “home” routers, my question is:

What is changed in the RF side of the radio, and which of the “sub-50 dollar” radios will give the best RF performance?

hap ac lite

Just for clarification, i speak more about coverage and robustness than bulk troughput.

Wouldn’t the WaP-2nd be a little better due to the use of discrete antennas (instead of pcb trace antennas)?

Hap Ac is just not available yet, and is likely to take a few months to get to my distributors…

any of the newer (hap lite, hap, hap ac lite) have the same 2.4ghz radio

advantages over rb951-2n:

one more chain, potentially doubling the throughput (if client supports it), and the benefits of mimo
6db more of tx power (that means 4 times the tx power)
1db better rx sensitivity
the cpu is 50% more capable

is a better radio than rb951-2n but far from rb951Ui

InoX say about “hap ac lite”
And it is actual product - distributors have hap ac lite in stock
http://routerboard.com/RB952Ui-5ac2nD