For clean FM reception you will need a directional FM antenna. I use a directional in my attic. Manufacturers stopped making them years ago. This Steller Labs 4 element is still available ...
The best antenna really depends on location and it's certainly true that a high-gain, directional antenna often gives the best results. Good FM antennas are still being made and one of the best seems to be this Sky Blue SBFM9. But if neither signal strength nor multipath are issues for you, a simple folded dipole wire antenna may be all you need.

