Welcome to the board Tom!
David gave some good info. Flavor profile comes from the rubs and the smoke. Some may say the smoke is a little lighter compared to stick burners, and comparable to some of the pellet burners. Finding the balance of these, you can use a varying amount of wood.
But they are easy to use! For the size, the one is small. You will have to make some adjustments for brisket and ribs, but you will get good cooks. My dad has a #2 for him and my mom and loves it. He cuts ribs in half, and shoves the brisket in or will cut that as well. You didn’t mention how many you may be cooking for, but that’s just one thing to keep in mind.
But, again, this is Lazy Q at it’s best. And these cookers are well made, so should last you quite some time! I’ve had my #3D for four years now, love it.
Hope that helps!