I was just looking at some orange, and some yellow catts at the Tamiami Orchid Festival. I would suggest attending the shows that come within your area.
The best awarded cloned are usually from two sources.. the aurantiacas (sp?) and the dowiannas (sp?)
The former with be of the smaller size, and the latter towards the standard catts.
Unless you look for the Laelias, but those will be smaller plants/flowers.
I have both the Lc Chit Chat (awarded 91 pts) and Lc Trick or Treat (85 pts) and these, in my opinion, are the best bang for your buck. While the individual flowers will be on the smaller size, the spikes can have spectacular blooms of 20 or more flowers, making the great displays. Especially the Chit Chat. Last year I had 4 spikes on a 7 p-bulb plant. I should have 10 or more this year.
This is not my plant, but an example of what they look like...