First, I'm going to disagree with basically everyone else here, and say that I see no reason you can't pick up one of these inexpensive solutions and be completely happy. Understand that you must set your expectations in line with what you are purchasing, but it already sounds like you are because you have explained compromise is OK as long as it is cheap and matches your equipment and beginner experience/equipment.
First of all, if you have no tripod yet, you can do a lot of new types of photography with ANY tripod, no matter what the price, as compared to what you could do without a tripod. A tripod could be considered a box that you get from the home improvement store, or even something you find on the street, but any object that allows you to set your camera down and take long exposure shots or any shot that is not handheld will expand your capabilities.
Some of the downsides to cheap/inexpensive tripods include:
- Will not properly support heavy/large lens/body combinations
- Legs may bend or stress under weight and become unstable
- Wind may blow over the setup
- Setting up a shot to be level can be complicated and cumbersome if tripod is designed for video
- The tripod may be very heavy/large
- You may be unable to take shots at ground level or close up that macro requires
- Poor manufacturing will lead to deterioration of the product quickly
Read the above statements a few times, and once you fully understand them all, go ahead and purchase an inexpensive tripod and start taking photos!
Some tips on using an inexpensive tripod that still allow it to be usable:
- Don't max out the height on any section, especially the middle column
- Utilize any feet features that help secure the tripod(middle pins or rubber feet)
- Keep the total camera weight well under the maximum stated
- Stay away from questionable weather conditions, wind, sea salt, sand
As far as the three tripods you specified, I see no issues with any of them specifically, I think you will find more value in the reviews on Amazon then any specific things I can point out.
Overall, a cheap tripod is going to give you additional options you currently do not have, the capabilities will be limited, but as long as you are smart, and use it while considering the downsides you will find a great utility in this sub-$50 accessory.