I have several for various reasons ( mostly because I had my own QS once a upon a time), but my favorites are 81/2 x 24 and the 3x9. Evertything else collects dust unless I have misplaced my favorites.

You name it, I have it....SOMEPLACE in my room...........

My main ruler is my 6-1/2 x 24".

For specific projects, though, I generally make my own rulers - I create the grid I want on the computer, and then print it off on a transparency. I then tape it to a piece of plexiglass (I bought a bunch of different pieces on e-bay for a couple of dollars.)

That way I always have exactly the ruler I want for the project... and I only need to save the transparencies, so they take up less space.

Some of my rulers:
http://www.3dquilt.me.uk/homepagefiles/rulers.htm

I have four rulers I use. I don't purchase 'specialty' rulers.
6X6
6X12
12 1/2 X 12 1/2
5X23

How about a pic of things made with wedge ruler. I don't have that one :)

The ones I use most are a 6 1/2 X 24, 12 1/2 square and a 5 inch square. The long one is for big cuts - stips WOF,etc. The 12 1/2 I use to square up my blocks. And the small one is for trimming.

If I had to choose my 3 favorite they would be
6 1/2 by 24

12 1/2 sq.

6 1/2 sq.

I am a newbie ,but I just wondered if painting the numbers with clear nailpolish would decrease wear for a little while?

6 1/2 x 24

6 1/2 x 24" and my 12" square use most. I have rulers still in the package - x-block, wedge,triangles (of all sizes) in other words way to many. But when I see a pattern that I like - I feel I have to get the tool. Never know when I'll be making that quilt and have to be prepared.