Had time to try out the Wii controller. Started off on Metroid then moved on to RedSteel2, but eventually moved on to a few other games.
Overall, it's a really good substitute to the stock controller. The motion sensors and pointer functionality work just fine. Never noticed any lag. The A, 1/2 and -/+ buttons feel solid, plus they are larger than the buttons on the stock controller. The d-pad looks identical in size and shape to that found on the original controller. The d-pad does not have a central pivot point, which means it's possible to depress all corners of the d-pad down at the same time
The nunchuck is slightly smaller than than stock version. The Z & C buttons feel studier than those on the stock nunchuk. The analog stick has good resistance to it and uses a circular gate for its movement (similar to the analaog stick movement of the 360 or PS3 pads) as opposed to the octagonal gate on the stock nunchuck.
First played Metroid Other M , on Hard, with the new controller. Directional movement was fine initially. Movement was fine when you weren't dealing with enemies. However, there were problems once you were surrounded by enemies. I'd try to move one way or dodge and get stuck due to the d-pad.
The dpad isn't good for quick directional changes. Trying to roll your thumb from one side to the other usually results in the depression of entire d-pad. In other words, you can push down all corners of the pad at the same time. Not good thing to have happen when you're playing a fast-paced game.
Next, I put in RD2 and hooked a Wii motion plus up to it. Worked just as well as the stock controllers.
After that I decided to try out Dead Space Ext., SMG, and Wii Sports. They all played well with the new controller.
In the end they nailed the motion and pointer functionality but screwed up the d-pad. Luckily most games don't use the d-pad as the main movement input.
Still a good deal at $25 for the package
$15 gift card with purchase of Nintendo Wii
40% PowerStand Charger for Xbox 360 or PS3
thanks for the tip redfox