T5's and LED together are better than LEDs alone, in my opinion, but you can get decent results with just LEDs. There are tons of grow journals using LEDs. LEDs cost more upfront, but you save in the long run with enery consumption being less. And not having to change bulbs every year and less expensive to cool. LEDs are ideal for small grow spaces. As for needing to be an "expert grower", I don't think so... I have a PG180 and I am by no means an expert, as I am in the middle of my third grow... 1st grow was just LED, 2nd was LED + 2 t5's. Now I have 4 t5's and 125watt HPS in addition to the PG180. Check out the LED without LEDs thread(
https://www.rollitup.org/indoor-growing/358190-led-without-leds-my-first.html). Dude uses T5s like you never seen before. Anyway, do tons of research on both before deciding which is best for you. And watch out for LED and T5 haters, they will trash them both without having used either... Happy growing!!!