I installed a 22" LED fixture in my kitchen, replacing a 4-bulb fluorescent fixture and the light intensity is the same, very bright.
Afterwards I installed 2 of the same type fixture in the train room/upstairs. The upstairs is divided into to halves, with 1 fixture in a 12x24 section (where the layout is located) and the other fixture in a 18x24 section, with stairway and wall in between. I also have a 24", 2-bulb fluorescent fixture over the stairway. The ceiling upstairs (1940s Cape Cod) is 7' tall.
In the larger section with the stairway (1 LED, 1 fluroescent) the light is great, but in the smaller section I have some shadows when walking inside the layout, the fixture is centered in the room. I think it's mainly because of the low ceiling (the ceiling in the kitchen is 8'), but I also have the walls painted blue in the layout room, which may be toning down the light. It could also be the side with the LED and fluorescent fixtures just has more light output.
I need to buy another LED fixture for the train room, but Lowes stopped carrying that particular fixture.
Also, make sure you get enough (of the same type) LED bulbs for your needs. I have a ceiling fan in a small bedroom that I thought had 2 candelabra-based bulbs in it, so I bought 2 LED bulbs to replace them. As it turned out it had 3, so I went back to Walmart to get another. The boxes didn't quite look the same and when I got home I realized the 1st 2 were cool white and the 3rd is warm white, big difference.
As I have to replace lights, I'll upgrade to LEDs. Not having to replace them as often (I haven't had to replace one yet) is worth the extra $$$, plus they last a looong time and no heat buildup.