Both the tristar and the 2001 are going to be good boats. I have ridden behind both. I owned a 88 tristar and had very good luck with it.
IMO- the tristar wake is better. I am probably going to get pounded for this but it is my opinion. The tristar is going to take more weight to make the wake nice. Plan on 2000 lbs. With this said it doesn't leave much room for anything besides sacs in the boat. The wake on the tristar has alot more transition that the 2001. The tristar can be a little tricky to drive when you have that much weight in it.
The 2001 is going to take less weight to make a big wake. The wake will be much steeper with little transition it is also a little narrow for my taste. Some people really like these wakes though.
Both are going to be very good boats. I currently have a 97 supersport nautique just so you know that I am not a nautique hater or anything. If you have specific questions on the tristar let me know or you can email me. I had mine for 3 years and put around 500 hours on it.
Here is a pic of the wake from my old tristar.