Perhaps each of us has different experiences with different firmwares.
And each of us has different weights of what he needs from his device in his personal home area.
For me the 1.33 is the best firmware since I bought the DIR-655 (Rev A2 / FW:1.02)
It is most stable running without any hickups.
Wireless performance is that what I ever expected to get from 11N.
With 1.11 and 1.21 which a lot here post as best firmwares, I had only troubles.
I used 1.12 and then 1.22 until I updated to 1.3x series which ran for me.
I did not want to downgrade.
You may also call me fanboy because I have a lot of D-Link equipment and a lot of positive experiences.
Up to now my network is running most reliable and that is what I need because I'm working a lot from home office.
If a firmware that runs for most other does not work for you, look for the causes in your home and do not blame the router or firmware first. Wireless is a very sensitive connection and often only needs some small corrections in the settings or change of device location to turn bad into good.
However don't expect it to be a 100% replacement for a wired gigabit line.
...but what I can say for sure is that with the exact same settings, the wireless radio on my 655 does not blink out on 1.21 but does blink out multiple times a day on 1.32 and 1.33...
If you use a different firmware, you can't expect the same behavior with the same settings. If nothing had been changed, it would not be a new firmware. So try out different settings.
1.33NA firmware is the most performant for the DIR.
(for EU readers : 1.31EU is the sameSDK/kernel version but has different shareport version and some different functions enabled in the web interface)
Yesterday I made some performance tests with different DIR routers and who is interested:
http://lizzi555.dyndns.org/655/SpeedCmp855_825.htmlor
http://lizzi556.dyndns.org/655/SpeedCmp855_825.htmlEdit: some typos