IMO, the savings of $200 for the RR sliders is quickly dimished when you consider:

1) the 4xG increase ground clearance at the rockers by about an inch whereas you lose over an inch of ground clearance with the RR.
2) the 4xG fit & finish looks as good as, or better than, stock.
3) the increased sliding surface (8" wide?) will ensure that you glide over things smoothly and provides plenty of support whereas the RR look like basic square tube welded to some brackets

Ease of install is probably a wash between the two. So you may spend an hour longer on one or the other... not really decision maker to me. i'd rather spend a full day installing a quality product than 2 hours installing a lesser product.