I just switched all my UVB lights/fixtures to Arcadia from zoomed. After getting my solormeter I realized Arcadia puts out a more consistent UVB range for longer... Why change a bulb every 6 months (Zoomed) when you can get a year + (Arcadia)? The light put out by Arcadia is also just, brighter? Someone pointed out once that the zoomed looks like it has a plastic film over it compared to the Arcadia...
I’m a fan of Arcadia since hearing that they are good for a year and ReptiSun is good for only 6 months. It has been said since that ReptiSun has improved and also lasts a year, but I haven’t bought one to check it for myself. Arcadia has proven itself to actually last more than a year for me.
Just avoid the cheap knock off brands. I tried a ReptiZoo T5 and the output at brand new was just dismal.