I wasn't technically responding to you.
But yes, I understand where you're coming from. I wouldn't buy a D300 then get some $200 lens... that would kind of defeat the purpose of buying a D300.
I seriously considered the D300, but for whatever reason I was drawn more to the 50D Canon. Perhaps next year when the next generation cameras come out things will appear differently to me. But by then I'll likely be pretty heavily invested in Canon as I'm already looking at $4k of glass for my 50D.
I'm thinking my next big move will be for the 60D (guessing here) or the 5DMkX (III perhaps).
We'll see.
But given my research I'm pretty firmly planted in the Canon camp at this point.