It's best to immerse yourself in the knowledge of blogs like Fragrantica, and find a scent that fits your liking and budget.
Depending on what kind of scent you're going for, greater strength might be better for you. In fact, the same scent at two different concentrations may even smell completely different.
Eau de cologne is one of the weakest, with around 3% concentration of fragrance oil. Eau de toilette has around 10%, while eau de parfum has between 15% and 20%. Straight perfume has around 25% concentration.
Apply to naturally warmer body areas like your neck and chest, as this will allow the scent to dissipate evenly throughout the day. Cardinal rule: Don't overdo it.