In general, I also enjoy rules light games. Systems like Into the Odd, Mausritter oder Mörk Borg are really a joy to read when compared to more heavy-weight systems (even D&D5 took me a while).
In actual play, though, I found that I tend to favour systems at the upper end of rules-light (or lower end of rules medium), e.g. Year Zero games. One thing that probably qualifies for rules light and which I enjoy a lot is
Broken Compass, a system geared towards modern day pulp action. Unfortunately, it's currently available in PDF only, but as far as I understood, Two Little Mice (the publisher) are working on bringing it into general distribution.