So I have never bought a set of new heads before but its about time. My current ones are well worn pearl protune heads which need replacing. I don't know anything about buying some new ones and one some guidance. Firstly, what come in the package? Will a g2 clear set for example (not that I specifically want these) come with both skins for one drum (top and bottom) or just the top. If its just the top does the bottom need replacing too or do I just leave the bottom and tune it with the new one. Secondly, could anyone point me in a direction for reasonably priced metal/rock heads for 10 inch, 12 inch and 14 inch Tom's, 14 inch snare and 22 inch bass. Maybe a link to the heads would help? Thanks.