Tried Plucker? Here's some of the advantages over AvantGo:

1. Plucker has two forms of compression (zlib/doc), AvantGo does not.
2. Plucker supports 10 languages, AvantGo does not.
3. Plucker supports local files (file://tmp/foo.txt) and intranet (including https://) content, AvantGo does not.
4. Plucker supports runtime image scaling via the parser (altmaxwidth, altmaxheight), AvantGo does not.
5. Plucker is an 85k footprint on the Palm, AvantGo 4.0 is 399k, without content.
6. Plucker supports Gestures, Autoscroll, Tap Navigation, and Hardware button configuration options, AvantGo does not.
7. Plucker is free and open source, under the GNU General Public License, AvantGo is not.
8. Plucker uses an openly-documented data structure format, AvantGo does not.
9. Plucker works on 11 platforms, 5 operating systems (with varying degrees of difficulty), AvantGo supports 1.5 OS' (Windows, and "almost" Macintosh).
10. Plucker does not "restrict" what websites can do with their own content, AvantGo does.
11. Plucker supports multiple instances of the same content (NYTimes with images, NYTimes with color, NYTimes without images) loaded at the same time, AvantGo does not.
12. You can beam your Plucker content to another Plucker user, with AvantGo you cannot.
13. Plucker offers 5 font choices, AvantGo offers two.

I actually wrote a node on this, to help try to recruit some perl help for some parts of Plucker. Any interested monks with some spare time to lend a hand or some creative insight?