WS2811 have a different format, RJ's controllers will work for some of them. Problem is there are different bit rates, just like TM1804. When playing with 2811's be aware of this as well as the voltage.
If I remember right you should look for 800k bit rate. If you must try 2811's, get a sample of what you want to use.
There is a bigger selection of 2811's and use different voltages. 5V seams to be the most popular single LED pixel, 12V 2811's usually have 3 LED's for each pixel, and 24V 2811's are large multi LED pixels.
Using different voltages gets complicated quick. This string has the first 25 pixels at 12 volt, then 1 that is 24, and now 30 that is 5 and ends with 24 at 12, there is still room on this string so I will add some of, and now I have smoke..
Best to use the links in the wiki. These are known to work.