I have an 8 oz bottle of 111. I did not like using it as much as 105, which is my favourite. I prefer working with 105 and love the look it gives. I know that doesn't really answer your question, but I haven't re-ordered the 111, so what's that tell you?
From a guy that loves the Duragloss line, that tells a lot. I like DG105 also but haven't tried DG111. In fairness to DG111, I read some people loving its look. At the end of the end, it's subjective and the only way to know is to try it. If you do not have a lot of sealants, you should buy one. It's cheap (price wise) and if you will not like it, the durability of DG sealants make them a good base for your favorite wax.
I like 111 I think it leaves a great shine, adds a true sealant look to a car, some might say plastic looking. Durability was 4 months and I decided to try something else so I have not truly tested the durability on it.
I love 111, more than 105 or any other DG product. Great gloss and shine, not much depth though. Sort of has a laminated plastic look to it, which works very well on silver and white.