Well this thread is old, you've probably found your answer by now but I'll answer anyways.
I've got experience with these. The sleeving on them isn't really 'sleeving', The wires are very thick, and coated in this thin, sort of flexible, crosshatched plastic layer (kind of hard to describe). Out of all the MANUFACTURERS that offer single braided cables, in my personal opinion Maxfinder is the highest quality available. The crimps are flawless, and the sleeving is perfectly melted to the end of the cable. I really like them, but like you said, they are a little pricey compared to other options. If you don't want to do it yourself, and you don't want to/can't afford Lutro0 extensions, I'd go with these.