"You can't work them if you can't hear them."  Even with the best radio, you won't be making contacts without a good antenna.  However, it doesn't have to cost a fortune to have a great antenna. With the amount of information about making your own antennas available on the net, good antennas are relatively easy and inexpensive to build.  The following links should get you started.

 

Home Brew Antennas

AC6V Homebrew Antenna Site--

The DX Zone--

Additional information