Delta 3200 is one of my favourite films in MF, because I do so much available dark portraiture -it's a godsend and gives lovely negs when semi stand developed in PCAT HD.
Also: APX 400 in PMK-tonality that's good enough to eat and reminiscent of older style thicker emulsion films. Still mourning Verichrome, but looking forward to trying EFKE/Fomapan. Like the tonality of XP2 as well, and it's so handy when you're away from your darkroom for long periods of time.
If you pick a range of 3 or so films and devs for regular use, and then try something new every so often, then I feel that that's a reasonable balance.