I'm planning on adding to my pan collection and want to start getting some square pans since right now I have NONE!
What sizes should I be looking at first? I'm thinking 8" and 10", but then I see odd sizes, and I really just don't know.
I really am just doing cakes for family and friends at this point, but I would like to experiment more.
Any input would be greatly appreciated! 
Karen
I only have even-size pans (14/10/8, etc) in both round and square.
Since you can get more servings from a square pan than you can from a round pan, you can get by with just the smaller ones. I'd definitely get a 6" square, too, and if you do wedding cakes, get a 12".
If you do volume, eventually you'll want to get at least 2 of each so you can bake both layers of a tier at the same time, instead of waiting to bake one, then wash the pan and put it back in the oven for the 2nd layer.
I have 2 of each up to 11" sq.
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15
I LOVE square pans
where do you sleep? 
I just bought a set of 6, 8, 10 squares the other day..I ended up buying fat daddio brand cause that's all everyone had around me and I was in a pinch and needed them for this weekend's cake; used them for the first time last night and well without starting a debate all I'll say is .. I hate change and wish they were Magic Lines instead 
Christi,
I'm so glad I'm not the only one that feels that way about change!
I just ordered and have two sizes of each: 4.5, 5, 6, 7, 8, 9, 10, and then one of each for 12, 14 & 16.
My MOST common size ordered is the 12" and, of course, I am wishing I had ordered two pans since it is a pain whenever I get this order, and that is every other week..... I skipped the 13 and the 15 because I was plum outta money and I figured I had enough to make whatever configuration I needed.
I can use the 9" and 10" if I ever need to make an 18 or a 20, since there is no chance of those fitting in my oven anyhow. If you want to only order 3 or so, I would get the 6, 9, 12 since I think a 3" difference in tiers is easier on the eyes then the 2". I originally got a set of 4.5, 7, 9 & 12 inch off eBay for under $40 and it worked great for several years. It's just that I want to eventually offer wedding cakes, etc..... I ordered mine from Ultimate Baker - great shipping and excellent customer service ( Magic Line pans). I even called a day after I placed the order to add another set and he gave me a break on the s/h since they had already shipped out my first order.
If you decide to go Fat Daddio, Global Sugar Art has a really good selection and very reasonable shipping but they don't carry and ML pans.
I just bought a set of 6, 8, 10 squares the other day..I ended up buying brand cause that's all everyone had around me and I was in a pinch and needed them for this weekend's cake; used them for the first time last night and well without starting a debate all I'll say is .. I hate change and wish they were Magic Lines instead
ditto
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