My answer would vary depending on what purpose I needed these guns for: survival/combat/something serious or fun.
For fun (these guns, I own):
1. Rifle: Converted Saiga in 5.56x45. I had long theorized that the main problem with AK accuracy are to do with the cartridge and the short sight radius. Problem 1 is solved by replacing the 7.62 with 5.56. Problem 2 is solved by
http://www.tech-sights.com/. I own one in this configuration and it is my baby. It is no less accurate than my carbine ARs.
2. Pistol: CZ 75B in 9mm. I do not find handguns aesthetically pleasing in the same way as I find rifles and especially shotguns. I share Jeff Cooper's opinion that a handgun is a stop-gap measure to allow you to get to a rifle. That said, the CZ 75B is one of the most beautiful handguns ever made (IMHO).
3. Shotgun: Early production Browning Citori 12ga, 28" barrel, fixed choke (full/modified). Mine is from 1974. It's Grade I, nothing fancy in its looks, though someone put some really beautiful wood on it (for some reason, with a high comb and cheek piece, which makes it just a little awkward to shoulder). However, it was my first O/U, I'm used to it and I love it.
For something serious (I own the Rem, the others are on a low-priority wishlist):
1. Rifle: Rem 700 in .308. 26" bull barrel, Nightforce or IOR Valdada scope in variable magnification no higher than 12-14x or so. If I have to fight for my life, I would prefer to do it from half-a-mile away.
2. Pistol: Jericho 941/Baby Eagle mid-size in .40 S&W. Basically the same gun as the CZ-75 Compact, but more aesthetically pleasing (to me). Mid-size is what I find ideal for concealed carry.
3. Shotgun: 12ga Saiga. AK reliability + ability to use mags. I'd have to work on it to tune its reliability.