I dont know much about YN...but I have used LE for going on 7 years. I have dealt with the company personally, and Lezlie is a JOY to work with. She is very professional and personable...and wants to help in everyway. I do agree that their price points are spot on. They run specials and give you a flyer ahead of time-- so you know what will be on sale and when...so you can plan when you need to stock up on things.
Ive always just used their 1-step for natural nail repairs, and the Pink/white builders for my enhancement clients. I LOVE the super shiny too....and you can get the refil for such a good deal.
I know that YN has a good following too....and they are good at customer service/appreciation as well.
What I would recommend is calling Lezlie there at LE and ask her for a sample kit. I 'think'.....she will send you one out for free....and use it on someone for a full set and a few fills...so you know how it behaves. Do the same w/ YN and just see what you like.
Nails and nail products are so personal...I honestly believe that 'most' of the lines out there are really good...its just what you like-- for whatever the reason...that sells us over the next line. Whether is cuz a famous NT uses..whatever...or bcuz you really connected with one of the owners...
you know what I mean.
I believe that if you are good-- you can use almost anything to create beautiful nails...its just the 'little things'...that sometimes make or break our choices.
I deal with Nailite alot too....just because Lisa is AWESOME....she knows who I am when I call...and helps me out like Im her ONLY customer. Does she have to do that? No...but its what has kept me coming back after years and years.
The same w/ LE. I hadnt been in the business for almost 3 years and called Lezlie up..and she remembered me after all that time.
That means something in this day and age...
So, you decide...I just wanted to share some of my personal experiences with you...


Hope it has helped....but I dont think you could go wrong either way