Mike I have a 401 & have been using a Jelco SA750D with it very successfully with a AT33PTG mkii, a lovely arm to use & looks to be very well made, for the money it is excellent.
However, I have just sold the Jelco in favour of a Mission 774; I haven't tried the AT33 on it yet but I will do shortly, I am currently using an old Highphonic MC-R5 cartridge & it sounds fantastic, whereas it was a bit flat & disappointing on the Jelco which was obviously too heavy for it.