I'm looking for a bill tube effect and have come across many, the Viking Double Bill Tube is very intriguing, as well as Brad Manuel's The Heat is On. Any recommendation's as to which Bill Tube to go with or avoid would be greatly appreciated?

Thanks

You can't go wrong with Viking equipment, but it does cost a little more. Its usualy better looking and manufactured to good standards. If you are working every day, buy the Viking, its an investment is your career
and will last a lifetime.
If not the $20 look alike is good for part time.