Hi Dispar,
You had tried both and why are you sying the Zoomed is better. Expensive not necessary is better. Zoomed is only 18W, 24" vs Arcadia 24W 30". It is worth to change. I have not plan to switch to T5 or PL yet. By the way, can I just replace the T5 or PL tube using the same casing for the current FL? pls advise. Thanks..