Hi JackOfPH,
I'm not sure the best available decompiler in market. But, you can google around for "decompiler .net".
Here are some free decompiler too except redgates:
http://netdecompiler.com/http://www.remotesoft.com/salamander/http://www.decompiler-vb.net/vbreformer_free.aspxYou can also try the trial version before purchase one of non-freeware tool.