I find the shell holder more important than the dies ( a good tight fit is required, so you don't pull the rim off ) I have one bad shell holder ( don't remember the brand... maybe RCBS ) & one good tight one, again, don't remember the brand
BTW... I like the Hornady New Dimension dies, for small calibers... they make seating little bullets in small cases easier, & I see they offer them in 5.7 X 28... I don't have the Hornady dies for my 5.7, but I'd probably buy the New Dimension dies if I needed some today...
I kinda like the lighter Hornet bullets for use in the 5.7... like the 40 grain & lighter bullets from this list at Midway
http://www.midwayusa.com/find?sortby...ensionid=15800