I MUST trawl through the old mags hifi dave has and do some scans...
The 301 I think, has the better or more tolerant motor, which IIRC is better with mains voltage drifting than the 401. I also like the grey hammerite 301's, but the 401 in a window display (Tee Vee Sound in Hemel Hempstead in the mid 60's) was the very first proper HiFi grade deck I ever saw (where's the arm??? )
The 401 in original post is lovely - well done and I'm green
Oh yeah, the Tron ain't bad either...