I agree with Strechyman, A dipole is the way to go (if you want HF). I prefer a vertical for transmitting only, but a dipole will be the best all around performer for TX and RX together. Just like how a socket wrench will outperform vice grips, a single band dipole will outperform a multiband one (primarily on TX) so if You are interested in a specific band, build that antenna first, then move on to other bands later. Best of luck!