I use PeopleChow, slightly altered to be around 66% Oats and 33% Masa. I prefer the taste of the larger oat percentage, and in general i just like that i am using oats, given the (potential?) health benefits.
Furthermore, this mix really leaves my bloodsugar level feeling amazing. I really have to eat balanced meals, or i am left feeling woozy/shaky. I am left feeling almost entirely neutral after DIY Soylent (this specific variety of course).
If anything, the only downside of it for me is the neutralness. Sometimes i am left a bit bored. Quite funny considering i started doing this because i had terrible eating habits due to time restrictions, and now i complain about having to fill time that would otherwise be left with food preparation and consumption hah.
As a sidenote and unforeseen benefit of both DIY and Soylent - they make amazing road foods. When i am driving somewhere far away, i always mix up a bottle of my DIY. And i always bring a pouch of Official with me, for the way back (and random times when you might be stuck without food). Official Soylent plus a bottle of water and a blender bottle is a pretty nice meal in a pinch. Even if you don't want to eat the stuff regularly, i'd recommend it to anyway for road meals.