As for me, I have two bottles of perfumes, one for spring-summer, another for fall-winter.
I've been using Channel platinum egoist for more than 20 years. This perfume is a little bit expensive but it's my favorite perfume for winter season.
For summer perfume, I've changed several times over the last year. The best thing that I found is John Varvatos Artisan Blue.
This year, I bought Ralph Lauren Polo Sport qui was my favorite perfume in my 20's but I don't like it anymore. I don't know why.
I will take John Varvatos Artisan Blue next year.I think I will love this perfume for a long time.