I'm much the same. I tried five LED fixtures, all went back within the week. There are good LED planted tank units, but they are quite expensive. The cheaper ones will not usually work as the spectrum is wrong and the intensity may be insufficient.
I use T8 fluorescent tubes because, like you, I have used them for years, they work, and I understand them inside out. They provide low to moderate lighting (unless you want several tubes over a tank which can get bothersome) so the aim is to find plants suited to whatever light you intend providing them. And this brings me to the fish.
Fish do react to light significantly, and it is often detrimental. Most of our aquarium fish come from rather dimly lit waters, and they will be more stressed and often less colourful under bright light. The sort of light intensity one needs for high-tech planted tanks does negatively affect the fish. Even with my moderate lighting, I have floating plants in all my tanks, and in experiments there is not the slightest doubt that the fish do prefer this.
So back to the LED--if you know what you are getting, and it meets the needs of the plants in intensity and spectrum, thee operating cost will be much lower than non-LED while the initial cost of acquisition will be much higher. Most LED s high in the blue, and this is a major failing over freshwater planted tanks. Plants need red and blue light to photosynthesize and of the two colours red is the more important. Adding green to the mix does improve plant growth. This mix opf light is generally referred to as daylight or some similar name, and has a Kelvin rating between 5000K and 7000K. Around 6500K is just about ideal; with two tubes or with some good LED, one can havee a tad more red (warm) and on dual tube tanks I like to use one 5000K and one 6500K. Photos below show these, using T8 tubes.