[TRCFR] HB9CV or bamby-11 ? What is the best for me ?

[Tito]

Hi all. I have a vertical antenna 5/8 Sirio 2016. Im happy with it, but
I would like to transmit and do some tests also with a directional
antenna. I would like to use it on mobile: when I am parked outside my
city with my TS50 on my car. I would like to put a metallic base  under
one of the wheels  of my car. I am thinking in one of these antennas:
HB9CV or bamby-11. What do you think is best for me ?...Will I notice
any difference with my vertical antenna I current own ?. What are the
main differences between each of them ?...What are the main
chracteristics of these antennas ?

Any suggestion and information about where to buy it + prices is also
welcome; also some antenna plan would be good (although I havent any
experience in building antennas).

73 de Tito 30IR976