Welcome to the hobby. I use PC's and I am very happy with them. They are inexpensive to purchase, easy on the electric bill, replacement bulbs are inexpensive relative to MH and they do not heat up the tank. I have successfully kept toadstools, green star polyps, yellow polyps, button polyps and an array of mushroom. If I wanted to keep anything more exotic I would probably need to upgrade my lighting. My recommendation is that since you are new to the hobby and you may move, start with something managable as you probably don't want to tie up to much money in your setup. I started with a 29 gallon 5 years ago, moved up to a 150 gallon about 2 years ago and just downsized to a custom 50 gallon. My point is that you will figure out what type of setup suits your needs and interests as you progress in the hobby. I wish that I would have started out slower, researched things a bit more and been a bit more pudent with my dollars. I am still new to this hobby relative to the people on this forum and I recomend that you not be shy with your questions. If I would have started out here like you are, I probably would have a couple grand more in the bank account!
