Have a look at the CZ75 in all it`s variations.
Very accurate, tons of tuning stuff and add ons can be purchased, high cap mag but still a slim design.
The CZ75 is very reliable und just plain fun to shoot.
For a slightly lighter version, there is a Polymer version out. I think the CZ75 SP 01 Phantom
or a P-01, that is a compact version of the newer models.
It`s always a matter of taste, but everybody I have talked to and read in forums about, that tried a CZ75 will generally never go away from it again.