Small DSLR system - Pentax K30 with any of its small primes (DA40XS being the smallest)
DP1m - my best small 'landscape' cam to bring along.
Pentax Q7 - versatile small sensor ILC, if I really want small.
I can even combine the DP1m and Q7 to have the best o/p for landscapes and fast shooting for all other stuff, both in a very small package.