After finishing my last build plan I did a couple of weeks of SSBHV while we moved. SSBHV only contains sweet spot work and I wanted a break from higher intensity work (threshold and above) amidst the higher life stress of moving and missing a week during the actual move.
After settling at our new location I did a week or two more of SSBHV to regain the lost fitness from a complete week off of the bike, then intentionally switched to SSBMV to specifically add in threshold and VO2 work. I was a little nervous doing my first threshold and VO2 workouts after not having done any for over a month but was generally OK (not sure I could do a full three minutes of VO2, though, but SSBMV starts with 30/30s). I do + versions of the SSBMV weekend rides, though, when I have a little more time to spend on the bike.
Anyway, point being that either approach will work. If you want to keep doing threshold and VO2 work in a base plan, go with SSBMV and replace one of the weekend rides with your longer free ride. If you’re good with all sweet spot work and have the time, then go with SSBHV.