Comparing 'J' poles and 1/4 wave antennas is apples and oranges. The 1/4 wave is... a 1/4 wave long and has the characteristics of any/all 1/4 wave antennas. A 'J' pole is a 1/2 wave antenna with difference characteristics, one of which is a generally "bigger" radiation pattern.
Since comparisons are made using radiation patterns I would think that the 1/4 wave would come out the looser... all other things being at least equal. If you have to hide the thing, the 1/4 wave might be easier to use. Wrap plastic 'ivy' around it and plant it in a pot...
Since comparisons are made using radiation patterns I would think that the 1/4 wave would come out the looser... all other things being at least equal. If you have to hide the thing, the 1/4 wave might be easier to use. Wrap plastic 'ivy' around it and plant it in a pot...