First, keep in mind that a table is not real easy to move and tables that are not built that great are even harder to sell. You don't want a table that you will later want to upgrade because of something that will distract you when you are playing on it.
Second, get the best table you can afford. Think of it this way, how long will it take to pay for itself over the long haul. Add your gas, pool time, and, your time that you spend at the pool hall for practice.
Third, get the size of table that you play on. I have a 4.5 x 9 Diamond Pro because that is all I play on. The transition to a smaller table is a lot more easy to make than playing a small table and going to a bigger table. A furniture or home table will not hold up like a commercial table.
Fourth, Any table is an investment on your part. The more you use it the better the investment. Remember, the cost to set up and move a table is going to be about the same, you need to pay for quality of table.