i have an original digital rebel and i really need to upgrade. i was planning on getting a 40d after canon announced it last march. :-(
canon let me down. so now i am thinking of getting a 30d. i thought i had read there would be a price drop this month but no evidence so far. it would be a lot easier to justify if the price was $999.
i would get a 400d/xti but i am pretty disappointed with it. i don't like the loss of the status lcd and the noiser 10MP sensor. i'd rather have a clean 8MP sensor. i do like the improved focus points as this is a big complaint with my rebel. i've also read the sensor clean feature barely works so that is a don't care.
Well the 400d being "noisier" is in the eye of the beholder, aside from being considered a very good 10mp sensor(noise wise) down sizing an image is also a great noise reducer. So if you down sample a 10mp image to 8mp, 20% of any noise would theoreticaly vanish bringing it down to about the same noise performance as the 30d.
But really if you already have a decent camera(REBEL), I would wait to see what is offered in the 40d.