I adore my new Corriente. They cost a bit more than your budget, but are so worth it. I would save up and get a good used saddle or a Corriente. I don't know about your color scheme but they DO take custom orders so they might make one in black for you. I paid $760 for mine with bucking rolls (a wade) but I bet you could get a barrel saddle even cheaper.
Anyway, any nice quality used saddle is better than brand new junk. Try not to get brand new junk if you can help it. Also, good quality used saddles hold their value (as do the Corrientes) but if you buy a cheapie saddle brand new you will likely loose a good chunk of money on it if you go to sell it.
What my Dad always says is that if you buy quality you have quality. If you buy junk, you have junk. Quality will hold its value.