Estee Lauder's Beautiful is the first to come to mind. EL is known for quality, affordable and long-lasting fragrances with wonderful sillage, and Beautiful has been a best-selling grand floral bouquet for years. Private Collection is another of EL's opulent florals with projection and longevity. YSL's Paris is very bold and long-lasting, but you really have to like roses and carnation to enjoy it - I do. Guerlain's Insolence is a potent bouquet of sweet violets and roses - again, very long-lasting and lots of sillage. Givenchy's Ysatis is a wonderully rich and somewhat tropical floral with a chypre-y vibe - another favorite of mine. Gucci Rush is also a good candidate, but it's my understanding that you need to move quickly as it's being discontinued.
Givenchy's Amarige and Dior's J'adore aren't my personal favorites, but they are big, long-lasting florals with unapologetic sillage so they should make your list. And I guess I should mention L'Instant de Guerlain - it's my favorite floral-oriental ever for its gorgeous, velvety magnolia, but the honey/amber/vanilla base makes it too sweet and heady for some.
There are of course a lot more, but I'd say give these a sniff and you'll be off to a good start. You should be able to find all of these at any perfume counter for under $70, or so.