We are developing a public-facing internet WCM Portal on MOSS and we are planning to have a mobile version of that portal.

After reading lot of bad stuff about MOSS variations Feature,
we have decided against using MOSS variations for pushing content from our main portal to the Mobile site.

We are trying to find an alternate solution, most probably using custom code that will be lighter and more flexible

in simpler words, we are trying to find some way to replace the master page and Layout controls on the fly based on the browser type and version.

Comments, Suggestions, Ideas anyone ?