A directional antenna is generally better than an bi-directional or omnidirectional antenna. A directional antenna focuses the RF in a particular direction. However, a directional antenna will generally require a tower and a rotator so they are more complicated and expensive to install than other types.
A wire antenna, whether a traditional dipole, an off-center fed dipole (OCFD), or an end-fed halfwave dipole (EFHW), is generally easier to install than a directional antenna on a tower. This type of antenna will generally have a dog-bone pattern in that they will work best in two opposite directions. But, you'll need the required supports and you'll need to get the antenna relatively high off the ground in order to get the proper take-off angle for working DX stations. OTOH, a low-mounted dipole can be very effective for working less distant stations.
A vertical antenna is omnidirectional but generally requires radials along the ground to work effectively.