My band is just starting out. I have a distortion pedal already and i am going to get another pedal. the music is like sort of like 80's or metal without the screamin. I am the only guitar so i want to get something that sounds cool and is going to make the song sound more full when needed. I was thinking about a flanger pedal. Any suggestions?
I would recommend an EQ pedal. I got a cheapy Rocktek EQ pedal off eBay for about $25 AUD a while back, and it's improved my tone heaps.

Go to your local music store and check one out before buying one though, since some people find them useless. It's basically boosted my 'weak' frequencies, and given me a more heavy sound - when I want to sound heavy.