OH OH Jim, you have just touched on 2 of the most hottly debated issues on this forum...go to these threads below and do a search...

http://www.peachparts.com/shopforum/showthread.php?threadid=11994

http://www.peachparts.com/shopforum/showthread.php?threadid=12636

http://www.peachparts.com/shopforum/showthread.php?threadid=12277

Very enlightning, very interesting and every now and then very funny stuff
Hope this helps....