I've been a happy user of Traffie Hexbeam for about 5 years.
It works pretty good without any adjustment and any maintenance upto now.
This antenna has very unique hexagonal shape but realizes both very small foot-print and high gain at the same time.
Although the price for 5-band type is around 1100USD not so cheap, but it is reasonable when you consider the total system cost including tower, rotator, coaxial feeders, etc. You can enjoy 5 band with one antenna, one coax and small tv rotor with very low height! (see photo above which is extracted from Traffie's website)
In addition not only specified 5 bands (20, 30, 17, 12 and 10m), it can be used on 6m too! See the SWR plots for 6m below;