I did my 150k bonus in early september, hopefully the 200k at the end of this month; The gifts do actually get interesting at the 250k and 300k levels, but I'm not sure if I'll make it to these levels.
I think the only valueable gifts at the 150k and 200k levels are the extra points points.
It would be nice if they had an option at the 200k point to start earning status miles for 2009 status - even if it only accumulated at a rate of 50%, I'd still go for it.