Diamond makes a good antenna indeed..
i guess you have no room for a beam..maybe in the attic..if so,
i use gulfalpha .. Gulf Alpha Antennas
their 20 element 33 ft long works beyond good
and will likely last a lifetime (extremely well and strong made)
been using their beams for 2 meters..1.25 meters as well as 70cm for many yrs ( and wow do they perform)
only other beams i would consider are those of M2
i guess you have no room for a beam..maybe in the attic..if so,
i use gulfalpha .. Gulf Alpha Antennas
their 20 element 33 ft long works beyond good
and will likely last a lifetime (extremely well and strong made)
been using their beams for 2 meters..1.25 meters as well as 70cm for many yrs ( and wow do they perform)
only other beams i would consider are those of M2
...runna pile-up on 6m SSB