I am a band major from Chicago and we are going to have an evening party next Sunday, it need a large LED display with about 15 m (W)  x 3 m (L).  Where I can rent a cheap LED display and how much it would cost ? I want to save my $$ and I found this led display manufacturer on google, I was looking at their products and can't make sense of whats the differences between the ES and EL series, which one would be better for my use and more cost-effective? BTW they have no local rental company in US... any options else from other ones?

I wonder whether it is appropriate to talk about this here, but I need help eagerly, pleeeeeeese?