Consider the advantages of a beam again. If you are entirely on FM, a vertical beam would be the way to go. If you can also work SSB, the cross yagi like the Cushcraft suggested, or a real 'circular' like those from KLM can work well for both SSB and FM, In hilly country, I like the circulars. Take the M Squared 2MCP14 - their 'little' beam. It has 12 dbic gain. We need to convert that to real world dB over a dipole, vertical or horizontal. I would guess it comes down to about 8 dB. The vertical you're talking about is 7 dBi, or probably about 4.5 dB over a dipole. The difference between the two would be 3.5 dB. KLM's 'big' circular, the 2MCP22 has about 2 dB more gain. So that's more than an S unit greater than the vertical. Circular beams are perfect for satellite work, too, even if you're only doing FM birds. If that's in your plans, you might want to start building a tracking antenna system, with elevation rotor or combined elevation/azimuth capable of being computer controlled. There are some exciting 'birds' in development. The Japanese will have a ham transponder on board a satellite that will circle the Sun enroute to an asteroid encounter. Talk about DX!