There is a move to LEDs obviously cheaper to run and more and more products coming out and price reflects this ADA and Kessl for example but equally for more demanding plants CO2,flow ,fertilisers are important the priority according tho everything I read and learn. So T5 would be good option too .Tubes in the daylight spectrum by good company’s ,Arcadia for example give a nice rendition.I do think a lot of people got rid of T8s too early.Zeus pointer to Chihiros and the Fluval range seem reasonably priced