Like so many other things, once you start investigating you keep upping your price range along with options and/or quality.
I had planned on spending about the same as your $200-300 and wound up spending much more.

OTOH I'm very satisfied with my purchase.
First, make sure the tripod and fluid head combination you're considering are made to support your camera as well as things you might one day add, such as an external video monitor, battery or batteries, light, microphone/wireless receiver, and possibly an audio recorder.
Then, if you can, try out the gear with your camera mounted on it. See how fluid the head is. Can you adjust the tension in all dimensions from very loose to very taut? Is it easy to adjust the height of the tripod? Is there a solid plate on which to mount your camera? Is there a cross-brace, either at the bottom or the middle?
Note: Some feel that cross-braces are more of a pain than they are worth. I feel that it gives the tripod an extra measure of stability. When you're zoomed in all the way on a windy day, you might find that it's the only way to get the perfect shot.
Another thing to consider is the head itself. If you purchase a standard sized bowl head (probably 75 mm for a light camera) you can move it to another set of sticks (legs). This might be useful if you find a lighter and/or firmer set of legs in the future.
Lastly, what about the feet? Some will come with rubber feet, which is great for indoor shooting on hard floors. But on carpet or outdoors you might want to have sharp points for feet. Some tripods will provide a mechanism to switch or replace one type with another.
Good luck.