I think we all agree that the best supported is a vendor-supplied version.
And there are definitely enough howtos on compiling from source on the users list and even some on the wiki and manual etc.
The gap that the binary packages fill is for the people that just want to try out the latest stable features directly from the Xen team without all the modifcations from the distros. There have been these binary packages for previous version of Xen .
I think another reason that Andrej and I noticed it is that we are both involved with books on using Xen and probably both documented the process of installing from a prebuilt binary. The prebuilt binaries are nice for distros without official Xen support that don't want to take the time to build from source.
Aren't the prebuilt tarballs basically as easy as building the source three times (32bit, PAE, 64bit) and tarring the dist folder?
I think that someone on the devel team is probably the best person to do it, but giving instructions to us to do would be an option too.
Thanks for you time and efforts,