hello there do you plan on gaming with this laptop? because i would recommend staying away from thin laptops as they have poor cooling and heat dissapation i have heard the y50 has a terrible screen and its all over the internet i have heard the alienware laptops since bought out buy dell have become crap but i cant verify that. i dont know what screen size you want but i can recommend a few laptops for ya
http/www.newegg.com/Product/Product.aspx?Item=N82E16834152667
that has a 970m 3gb graphics card top of the line it supports up to 32gb of RAM and can have 3 M.2 SSD's that one is a 15 inch
http/www.newegg.com/Product/Product.aspx?Item=N82E16834725006
now i know i said stay away from thin laptops but this is the exception it has 2 exaust vents where as most thin laptops dont have 2 exaust vents it has a decent graphics card and a SSD stock it is a 13 inch laptop so it is on the smaller side but it is very portable.
http/www.newegg.com/Product/Product.aspx?Item=N82E16834152663
that one has a top of the line graphics card and a stock SSD. it is however a 17 inch
hope this helps good luck on your search