The Olds Cornet is a great way to go. I found one at a Pawn shop not too long ago for less than $100, but It got bought before I could get back to get it. Also, If you can find an old Besson 220 Cornet. These are also horns that can take the abuse that a beginner will dish out. I have one that's a a little beat up, but it has a wonderful sound that I play when I need to do stuff on Cornet.
edit....I just went back and looked at KingHornPlayer's King on ebay and I have to say that would be perfect for any level of Player.....Nice horn, if only I had the extra money
