I could NOT agree more.
Laurelin,
Are you asking in regards to your to your D300 or D60?
I have an SB400 (should be all you need, unless you want to use it off camera, then you could get an SB600) and an SB600.
Since I've gotten my SB400, that sees way more use than my SB600, but that's because I'm not doing professional-style photography. I like my indoor snapshots to look nice and evenly lit, that's about all I am requiring from my indoor flash work.
For whatever reason, and I'm unsure WHY it does this (unless my D60 is possessed), but when I use my SB400 on my D60, it automatically raises my ISO to 800 or higher. I do NOT know why. But that's ok, since there is proper exposure, my pictures don't get that high ISO grainy look to them.
My D300 is well behaved and doesn't raise ISO on me when I use my external (speedlite) flashes.
ISO 800 on my D60 looks about how ISO400 does on my D300.