When I made my first big push to reduce my pack weight, I dropped my base from 32 lbs to 22 lbs. That right there felt like I had made the leap into lightweight backpacking! I have since gradually reduced my standard summer base weight to about 17 lbs. I am very happy with this arrangement, which is all that really matters.

As for where the cutoff weight for ultralight or super-ultralight should be set, you can get a different opinion on this every day of the week depending on who you ask. There is no official organization issuing guidelines for what each label means.

My own sense is that as you approach 12 lbs or under, you can claim to be ultralight. When it comes to super-ultralight, I have no clue, mainly because I have so little interest.