I rate 18 hole courses against other 18's and 9 hole courses only against other 9 hole.
Otherwise the best a 9 hole course could be would be a 2.5 which doesn't seem fair considering that there are some 9 hole courses that are actually quite good and a lot of fun.
My Favorite Discs and related distances...
Put/Approach - Ken Climo Champion Aviar - 0-225 ft
Mid-range - Star Rock + - 225-300 ft
Fairway Driver - Champion Teebird - 300-345 ft
Distance Driver - Star Wraith - 345-475 ft
Distance Driver - Champion Boss - 375-480 ft
(My goal is to break 500' before the summer is over!)
UPDATE!! Just broke 500' today 9/10/10 Threw a Champion Valkyrie 522' and then and Star Wraith 515' had a couple others right around the 490's but those two were the furthest.
Other favorites (especially for windy days) include Champion Rhino put/approach, Gator mid-range, Banshee fairway driver, and my personal favorite into the wind driver... the Champion Excalibur.