Here are our video reviews on the different mounts for the Intova HD Sport 2.
Intova Suction Cup Mount - YouTube
Intova Lens Filter - YouTube
Intova Helmet Strap - YouTube
Intova Mount Adapter - YouTube
Intova Spear Gun Rifle Mount - YouTube
Intova Mask Gun Mount - YouTube
Intova Spear Gun Mount - YouTube
Intova Mask Mount - YouTube
Intova Sport HD Camera - YouTube
The one that I prefer the most is the mask mount, however it will only work for framed mask. On frameless mask there is no way to attach it. The downside to the mask mount, is its sometimes a pain to adjust the cant just right depending on your profile or orientation in the water column (must be done prior to diving). I have dove in heavy current (Lake Keowee Hot Hole, and Ginnie Springs drift dive down the Sante Fe River) and have found no drag issue what so ever while using the mask mount. I also use this on my pistols during competition for training purposes, it lets me review my shooting form. The mask mount would not be good for still photos, because you can not see what is in the frame, even though you are looking right at the object. However, you can take screenshots of videos as far as I know with the Intova. The wrist mount is neat, but then again depends on how your body is position in the water column (whether you dive with your arms in front of you or beside you). We have found that holding the camera in your hand makes the video very shaky, no matter how still you think you are holding the camera. Since the Intova will fit standard camera mounts, you could use any type of camera pole. And another suggestion is to use the magenta filter for fresh water instead of the red. Salt water the red does better. Now here are some videos on the drift dives using the mask mount. Sorry about the jerky movements (all me not the camera).
Hot Hole Lake Keowee Trip 2 - YouTube
Hot Hole Lake Keowee Trip 1 - YouTube
PDRA Under Water Haunted Trail - YouTube
In the last video skip forward to 7:17 and 8:36 to see the mask mount in action (underwater mirror).
Lastly we also sell SeaLife cameras and have used all the mounts for them using the Intova. This tends to be the best that we have found if you choose to do still photos. As far as the buttons being stiff, this is not an issue with us. To me it keeps the buttons secure from leakage. Now of course you don't want debris getting in them and breaking the seals. And even with thick gloves, we have no problem pushing the buttons.
All in all this is an awesome little camera at a very affordable price. I use mine for diving, training, hunting, shooting, on my fire helmet while fighting fires, even use it for security purposes around the house.
I will add this, when hooking the camera to a monitor and reviewing your footage, be careful not to hyperextend the door on its hinges and be careful pushing the buttons on the inside of the housing. I have never damaged the buttons, but I do worry about it because they are so small. You can remove the memory card and use a card reader, unless you are hooking straight into an audio video hook up.
Hope this helps.