ALWAYS use an FM specific antenna if you want to DX. A combo "VHF-FM-UHF" unit, at BEST, only has one element tuned for Channel 6 or 7, so you get an OK bottom end or high end of the dial reception. An FM Specific atnenna is fully tuned for 88-108 Mc. Whay pick up and amplify harmonics that will actually interfere with reception.
I use a Finco that's at least 30 years old. I bought it at auction for $.25 cents! It has come with me through 5 homes and two states! It's massive, super directional, super sensitive. I clean it yearly.
Now, if you're TRULY serious, for the tuner, go to EBAY, invest in a Marantz 10B. From the southern Jersey Shore, I can regulary get 101.1 from NYC, Philadelphia and/or Virginia Beach!