I use the foot inserted guide all the time. It works fine — the narrower the slice the better it is. 2" should be no problem and you can get the bevel on the edge at the same time.
When you are past the capacity of the t-guide, it's time for any of the other guides mentioned. Many things well work well, just depends on preference and how much money you are willing to spend.
I never cut anything wider than 2 feet on my table saw, I make a preliminary cut on horses and true it up on the TS. For that a snapped line is close enough for me and I free hand it unless I need both halves of a full sheet. Then it's time to get out a nice guide because my cut is going to be the finished edge.