I would like to try Tomato on an Asus RT-AC66U router.
What is the best or most favored release of Tomato that will best take advantage of this thing?
None. Loading tomato into that actually cripples the router. You'll reduce the routing speed to less than 150Mbps and AC wifi becomes disabled. Tomato on such good hardware is a disadvantage.
Okay, I had read some older (a few months) posts that Tomato wasn't running so hot on these, looks to still be issues. I'll just use the stock firmware for now.
Do you think they will ever get a port of Tomato working on these newer units? Is there something about the hardware that makes doing so especially challenging?
To port open software to a hardware, drivers must be readily available. If broadcomm doesn't provide those drivers for free to the open source, porting cannot be done. Closed source drivers available are compiled against the ancient linux kernel 2.6. Using them entails running the firmware with a very ancient and slow kernel.
Misleading information from the troll. OEM firmware achieves fast speeds through use of CTF. If QOS is used, then the speed drops to similar speeds to Tomato. If u don't need Tomato's QOS and features, then stick with the OEM formware, but don't spread misleading information here. Thanks.
I'm afraid it isn't misleading. I've personally tested an OpenWRT router loaned from my friend. In the lab, routing speed is 360Mbps, and that DLink router was able to let me use up my entire 200Mbps ISP connection. E4200+tomato is limited to about 150MBps routing speed and couldn't go higher. So I'm currently evaluating Netgear as a possible upgrade to make full use of my 200Mbps connection.