Summer Sun is available from Edmunds until 7 am June 10, 2014. After that you wait until next year. Palatine carries it most years, I think. It't a Kordes rose.
It is pretty bright, not as clear and bright as Vavoom, but it's easy to grow and it's a reliable bloomer.
Fired Up might be a good one. It's new, and I haven't grown it, but I've seen it in nurseries and it is eye catching.
I think it's in most nurseries this year.
My favorite orange is Easy Does It. It's the best rose out there, in my opinion. It's not bright, though. It is beautiful and healthy and always full of blooms.