What do you hope to do?
I'm a long standing fan of Boris. I use both Red and AE. I use Red more.
If you don't have those - I'd advise those over a filter pack for general production work and multiple clients. As full sets of filters and effects go, BCC is one hell of a pack. I'll be the first to admit there are much better lens flares that BCC.
Other folk, such as Graeme Nattress offer smaller (cheaper)-high quality filter packs that meet individual needs . See the LAFCPUG store for more info [
www.lafcpug.org]