Was OD&D Gygax's preferred system?

The closest I can get to a source is from this quote:

"I run three-booklet OD&D now and again myself, adding some house rules to make 1st level PCs a bit more viable and allowing Clerics a spell at 1st level if their Wis is 15 or higher." 

src: http://cyclopeatron.blogspot.com/2010/03/gary-gygaxs-whitebox-od-house-rules.html

There's other posts by Gygax on the ENWorld and Dragonsfoot forums where he states that he preferred rules-light systems in his later years over the rules-heavy approach of something like AD&D.


Also a good quote here:

AD&D is an interesting beast ... Gygax was distilling all the work done on D&D into one coherent system ... To my mind, his biggest problems come when he invents new material (such as the initiative system) rather than adapting the old.

src: https://merricb.com/2014/06/08/a-look-at-armour-class-in-original-dd-and-first-edition-add/

To me, this tracks with my current impressions of AD&D:

The best things about AD&D are the portions adapted from OD&D, tournaments, and Gygax's own home games.  Meaning, they were at least playtested.

The worst things about AD&D are the parts he invented for the book, because they seemed like a good idea at the time.