The first gun depends on a lot of things:
2.\tIntended use (Target, Concealed Carry, Hunting, Plinking, Home defense etc.)
3.\tBy "pistol" I assume you mean non-revolver?
That aside, the Glock 19 recommendation is a good one; it can probably fulfill your first and second gun requirements.
Other generally good options: 1911, FNH FNP, Walther P99, Spring Field XD. Etc.
Any gun you decide you want to buy should be test fired personally. -...