My view is this:
Prosumer (pro's against 300D):
-Total control of everything!! No limitations.
-A lot of nice (less important) features like time lapse photography.
-Live preview (many many people like that better than of the OVF, I
don't)
-Capability to upgrade to wide angle and tele with converters. One
WA and one tele converter is all many amateurs need. And they use
to be cheaper than stand alone lenses (well, they might be of worse
quality though...).
-Easier to carry.
300D (con's against prosumer):
-Lack of total control over many "big" things.
-Less "nice" features standard in many prosumers.
-No "swivel LCDs" (some people changing to 300D will miss them).
-Bigger, heavier, not suitable for everyday use for many people.
Saying that, I'd like to buy 300D as soon as I can afford it (if I
could afford a 10D I would buy it, but it's a big money difference
that I should have to think about even if I could afford it).
Changing/upgrading lenses is far low in my priority list (and, I
guess, many other people's lists)
Pro's of D-SLR (in this case 300D, the first "affordable" D-SLR):
- FASSST AF and RELIABLE!!
- Very LOW high ISO noise
- High(er) dinamyc range and better overall quality against prosumers
- Optical viewfinder (95%!!! even Nikon N80 or Canon Elan 7 are
just 92%, I think this should be mentioned in big letters in
reviews, comparing 300D and film SLRs).
- [things I can't remember now] ;-)
- Interchangeable lenses