Sell ASUS RT-AC66U and buy TP-Link Archer C6. Am I crazy?

I'll be honest at the beginning: I didn't make any real test with my old router, but my feeling is great with the new one!

The WiFi performance is better
Cheaper
- The ASUS router was $100, and the TP-Link Archer C6 router was only $50
3 years warranty
10 devices are connected to this all the time, it's still stable
I restarted it a few months ago and still works
Always cool (the ASUS was hot... I couldn't touch the top)
More efficient power usage (based on the specification of the power adapter)

Go to Advanced panel and configure these below settings to speed up WiFi speed and increase the security:

Network / IPTV, turn off all if you don't use IPTV at all
Wireless / Wireless Settings, turn off Smart Connect, then set these for 2,4GHz and 5GHz network as well:
- Set WPA2-PSK
- Set Transmit Power to high
Wireless / WPS: Turn off Router's PIN
Wireless / Wireless Schedule: turn it off if you don't use it
Wireless / OneMesh: turn off if available AND not used
Guest Network: turn off if not in use
QoS: turn off
Security / Settings: turn on SPI Firewall
NAT Forwarding / UPnP: turn off
IPv6: turn off if not in use
System Tools / LED Control: It's optional. I set Night mode between 8PM and 7AM. It will turn off all LEDs in this timeframe
System Tools / Adminstration: set strong password and turn off Remote Management
System Tools / CWMP Settings: turn off
System Tools / Firmware Upgrade: Check for upgrade and install it if the new version is available
System Tools / Backup & Restore: I recommend to backup your settings somewhere on your computer (and upload it to Dropbox)