Which camera is most prone to sensor dust?

I am planning to purchase my first dslr, either a XT, D20, or D30, in a few months and have seen a few posts here and elsewhere about dust on sensors. Is the XT with its less robust body any more prone to getting dust on the sensor than the D20? I know the D30 is probably too new to compare but is the D30 body exactly the same as the D20 or were there improvements to the D30 like better sealing? Is dust on the sensor a common problem or have I just been reading posts from the few people that have the problem?

common problem that you'll get on any dslr regardless. It mostly happens when you change lense. Can't be avoided unless you're very careful every lense change.

So that means that as far as getting dust on the sensor there is no one camera that is less prone to the problem than another?

i'd say so. if you're careful it really wont be a problem, and if you do get dust, just use a blower. Its not like you'll be cleaning the sensor every day. Dont base your purchase on whether the sensor will get dusty or not!

There is absolutely no reason any dSLR would be more or less prone to dust than any other. It's not THAT big of a deal.

Not really a pain to lock the mirror up and squeeze a rocket blower. Takes 10 seconds. I've done it a whole once since I got my 20D last autumn. Unless you're constantly changing lenses outside, don't worry about it.

I noticed some dust on my 300d after a year of owning it and bought the copperhill cleaning kit. It showed up, I read the directions, and 5 minutes later my sensor was clean. Blowers work, but if you want to get it super clean, don't be afraid of the copperhill method (as I am saying this I am debating in my head whether I would ever do it to my 5d )

I had some dust on my sensor, one blow from the rocket blower took care of it. I love my rocket blower, i would'nt be seen without it.

The camera most prone to getting dust on the sensor is the one that you use the most. It's that simple - all DSLR's will occasionally require cleaning dust and crud off the sensor.

You can minimize the problem by not changing lenses in an obviously filthy atmostphere, but you can't prevent the dust and dirt from migrating in there.

Cameras that are used to take pictures are most prone to sensor dust. In fact, most DSLRs come with sensor dust from the factory. Just learn how to clean them safely and don't worry about it.

I appreciate all the information. I suspected it was more a problem of changing lenses but from some talk I had heard I thought there may have been some cameras that weren't sealed well and were prone to get dusty. Now that that question is answered I just have to move on and decide which camera I want and can afford.

well thats easy... the xt :P