I like many, if not most, of the one step larger than sub compact (ie, CZ PCR, P-01, G19/23, XD Compact) but so many of the subs feel very un-natural in my hands.
I figure if you're gonna go small, go small... I'd go for a Kahr. P9 Covert. Very light, very short and thin grip... Good trigger. Mine was completely reliable.
I also like the RAMI but again, the PCR/P-01 seems much better balanced and not really that much larger.