I'm on my 24 inch right now, I have no problem with the glossy screen. Infact I can't even tell it's glossy, the only time you'll notice a slight reflection is when you are looking at something dark colored.
Even then, it's not very noticeable. I have a ceeling fan with a light right above my head and it doesn't cause a reflection. I can't see the glossy screen being a problem for me unless I have some kind of extremly bright floresent lights or something.
But to be fair, the screen doesn't look as nice with the light on, but neither does the CRT on my emac.
I have no complaints so far, also, not much of a problem with colors at sharp viewing angles, although with a light on and viewing even a slight angle produces a reflection, but it's not that bad. Also, I don't plan on looking at my imac any other way besides head on.