Yes I still use T5s I've a 4 tube maxibright lightwave and 4x nlite singles between them they're my early veg seed/clone and mother lighting during autumn/winter/spring outside of summer led doesn't produce the heat I need for acceptable temps with so little wattage.
Summers here and I've changed to led.
Now I've only a 1c deficit between inside and outside my tent inside is only 22/23c which is good in the circumstances I'm not looking for them to grow quickly.
Before I unplugged the T5s i put the light meter on the tray it was 1650 something for 98w to get the same 1650 something from led i needed 32w or 34w, i think 32w but it was over 2 weeks ago and you know what it's like
It's at 50w now for maintenance.
I'm about to start seeds i would actually prefer T5s for the job 4k light doesn't have that same rich blue spectrum which i like for seedlings in a small tent plus the temps from T5s would be benificial to the seedlings.
It's decided then lol.