Best PDA or tablet soln for GPS & XM WX and gyro AI

I decided awhile ago I'd like to get a PDA (preferred) or perhaps a small
tablet for in-cockpit GPS moving map and satellite weather and a backup,
emergency-only AI as well (not a simple GPS AI but a real solid-state gyro).

After days of research I can't seem to find a single system that does
everything I would like with no major negatives.

I started looking seriously at Anywhere Map/WX/AI which looks pretty good
except for their gyro - seems many users have problems with it. The other
thing is that there seems to be issues with their customer service.

I like NavGPS a lot too coupled with the PC-EFIS they bundle and that all
looks good, but I don't know if there is a satellite WX system that will
work with their software at all.

I prefer a PDA for size reasons (plane's a 152) but a small tablet that
could be yoke-mounted would also be Ok. If anybody can recommend a system
that meets all three of these needs and can be add for less than $3K all-up
I'd like to hear of it. TIA.