Grow lights and sun exposure

[Rhonda Svoboda]

I have actual grow lights that I got off amazon. They are free standing LED grow lights that cost about $60.00. I noticed last year that the light intensity wasn't as strong as the previous years so I consider them 'disposable.'
I am getting a high quality T5 or equivalent this fall but I get confused when shopping around for them. There are so many models and systems to choose from. I am just a hobbiest- not a commercial grower so finding a system that meets my needs, is aesthetically appealing, and affordable is tough- any suggestions?
BTW- am I suppossed to put my Catt.'s in full sun 8 hours a day? Some say yes and others no. One of my Catt.'s can't get enough sun and a couple others burn- does it just depend on the individual orchid?