Integrated & Tuner or Amp & Tuner-preamp?

From a design standpoint, in general, which combo is better sonically? Going to surprise dad for Father's Day with an upgrade for his 1978 McIntosh 4100 receiver to pair with his newly-purchased B & W 703's, as he'd appreciate a remote and the 4100 produces a thin, punchy bass and narrow soundstage. I'd like to spend $2,000 or less on the combo (entertainment center has room for only two pieces), including phono. Specifically, I have targeted either NAD 372 integrated + C 422 tuner or Anthem PVA 2 amp + TLP 1 tuner/preamp (both need phono preamp). Each seems reasonably detailed yet restrained enough (at my price) to complement the slightly cool/forward 703's. He listens to classical and jazz. Thoughts on the aforementioned equipment or alternative suggestions would be appreciated. Thanks.