RunRev: right for this project?

[Alan Simon]

Hello, I've been trying to decide if Runtime Revolution is the right 
tool to develop my new project (I'm also considering 4D and REALbasic). 
I'd appreciate any opinions on the suitability of Runtime Revolution 
for this project:

The project involves generating a report of a medical procedure.  Four 
people are involved in supplying data for the report, all of whom work 
in different places.

1.  A receptionist who enters data on the patient, what physician 
ordered it, why it was ordered, and similar demographic data.

2. A technologist who fills in technical data on how the study was 
done, machine settings, and what protocol and materials were used.

3. One physician is present while the test is performed, and will enter 
data while the test is happening.  Some of the data would be best 
entered with a "slider" type of data control, others with checkboxes or 
picklists.  Possibly a tablet PC would be used.

4. Another physician looks at the results of the test later in the day, 
and provides an interpretation.  Hopefully, he could electronically 
sign the report and fax it immediately to the physician that ordered 
it, or save it as PDF.  The report should also be saved for future 
reference.

Despite reading the available documentation, I've been unable to tell 
which programming environment would work best, particularly regarding 
the ease of having multiple users enter data, and the importance of 
using a database-centered programming environment, like 4D or 
Filemaker, as opposed to a more general programming environment like 
Runtime Revolution.  My programming experience is limited, and I don't 
want to find out a few months down the road that I made the wrong 
choice.

Thanks,

Alan Simon