I have had my 2006 Venture trike only a year and both my wife and I enjoy it so much. I looked at getting my 2000 venture triked but could not justify $15,000 on that old a machine. After almost 40 years on 2 wheels, 3 is different but lots of fun. I may not keep up with 2 wheels on a straight but once we get to the corners they are just in my way.
I just added an extra tank to the trike this weekend so just waiting for some nice weather (freezing rain right now) to start riding. I am planning to go to the Hannigan 40 year event in June.
I do not think you will go wrong with getting your 2006 converted to a trike. Happy riding.