id hate it if mac changed the 15 palettes to a similar design of the new quads. i can't stand the inserts on the new quads!! its so hard to get shadows out. if mac decides to change the palettes i'm stocking up on the current one. i have labels on the outside of my palette so i know if i have neutrals, highlights, or whatever in them. i already know whats in each palette anyway so it doesn't bother me much
if you're interested in palettes with clear tops, you should invest in z-palettes. they're a little more expensive than mac but you won't have to deal with popping trays or anything. apparently, they're more durable as well.
http://www.zpalette.com/wposc/product_info.php?products_id=29
the other option is the unii palette which is the price of like 2 mac palettes..too expensive for me personally.
xsparkage did a great review comparing all 3 palettes
http://www.youtube.com/watch?v=E7CN1TvZg8w
HTH!