Hi People,
I am recommending a fantastic, simple, and FREE VST Reverb.
DX Reverb Light.
http://www.anwida.com/product.asp?pid=7 I use it as a bus reverb for vocals, and I must say it is a beautiful clear reverb effect just like I have heard on many a commercial mix. Please note that a lot of my work is done in the style of the Singer/Songwriters of the late 60's/70's, as ballads with very clear vocals and simple arrangements featuring acoustic guitar. (Don McLean, Cat Stevens, James Taylor).
In particular, preset #15 called "EchoVerb" works beautifully.
Place it in a buss and pan it to the side a bit, and you will have a truly professional result.... especially when your vocals are uncluttered by a big production.
regards,
Adrian.