I went down a similiar path, and could share my experience.
I sold my 03 with stock shocks and purchased a used 09 with KW shocks. It was nice to be able to lower the 09, but I was never impressed with the KW's as being much of an improvement over the stocks. They always felt bound up, like they were hardly moving at all. They road pretty firm, and did not really use much travel to smooth out the bumps. They skated over rougher surfaces, and when I used them on road courses I got some pogo stick action that felt like they were going to put me into a wall. Personally I would only recommend them for people wanted to be able to lower their cars for looks.
I had a ride in HyperViper's Viper with Moton/cannister shocks. They were great. Good control, a much smoother and quieter ride and you could feel the suspension being able to work all along the stroke of the piston. This made me a believer in their technology. Price was almost $6,000 installed, but they got put on my list.
I also got a ride in a Penskey equipped car (think it was Dan Everts Racer) These were even better than the Motons, but cost even more. He had some pretty stiff coil springs, but the car still was well controlled and smooth riding. If you are a track rat, believe these are the best you can get. They are super high quality, well designed, rebuildable and multi adjustable.
I was talking with Mark Jorgensen at Woodhouse. They are very supportive of the racing community. They were working with some employees that had left Moton to start up their own company, Moton Control Specialists. They had great success with their racing shocks, and got lots of great feedback from their customers. As good as Motons, but with some quality and technology improvements.
Mark said they were just releasing a street version of their super shocks. They removed the remote reservoirs,(not as useful on street use) took out some of the adjust abilities, and tuned the shocks more for a great street ride than ultimate racetrack performance. The price was a bit over $3,000 which sounded like a great deal for me.
Trusting Mark, I had him send a MCS set to Todd at A&C for installation. Todd found a buyer for my old KW Variant 2 shocks, so the upgrade turned out to be pretty reasonable.
These shocks have transformed my 09. It has the slightly lowered ride hight I like, but with a much softer and smoother riding experience. The shocks use much more of the available travel. Harsh impacts are well absorbed, and the smaller stutter shocks no longer make the car skate around bumpy corners. It has the well planted feel that you get in higher performance German cars like Audi, Mercedes and BMW.
The car now rides much quieter and that annoying clicking sound I got from the KWs is gone. The car just launches off full throttle corners, and no more jittering from rough roads. The car tracks better, and launches much smoothly. Fantastic improvement. Teresa can now put on her lipstick while driving, while before it was a comedy to watch. Even changing radio stations is easier as your finger no longer darts around trying to hit the buttons.
Believe for most Viper owners, wanting to improve their suspensions, this is a choice to check out. Mark has lots of experience with all these shocks, and should be contacted to discuss your options.
As far as the Aldans, they have gotten a terrible reputation. I believe that Vipair is selling a rebranded version of them, but have not gotten lots of praise about them either. Lots of companies make shocks that can be adapted to fit on Vipers, but few have developed a reputation that makes me feel comfortable installing them on such a high performance capable car.
Cannot help you at all on the Wilber shocks. Never heard of them before in Viper usage.
