Looking for a good Red Dot Sight?

Several months ago I sent off my Smith and Wesson Model 41 to Clark Custom to have them perform their "Bullseye Optic" conversion on it, which involved a new barrel, trigger job and two tone chrome. Other than the grips and the optic it will look something like this:

http://www.clarkcustomguns.com/images/SW41/STCCMOR...

It will not have any standard sights on it. I will still have the two other stock barrels, a 7" and 5" which have conventional sights if I want that, but this is set up for an optic.

So, the question is - what optic?

I see this gun as something I can play in Bullseye competition if I want, and potentially get serious about, but I'm not yet. I see this as something I can potentially do a little .22 action shooting with. I also see this as a super plinker pistol, dead nuts accurate as far as I can see with no soda can in my field of view safe.

So what dot sight? Because the barrel has the back land over the action removed for better reliability (to prevent .22 brass from getting caught there, which was happening periodically) I think I need some form of smaller reflex sight to prevent some kind of cantilevered monstrosity. I think 4 MOA dot is probably as large as I want to go as a balance between speed and precision.

I have some experience with tube style red dots - I have one on another pistol, and I have a lower cost reflex as well - but it is tall and there is a significant amount of angle effect at shorter distances.

So - Yahoo Hunters and Shooters - what do you recommend? I'm willing to pay for the right device - after all it is going onto a Clark Custom 41, but at the same time I'm not interested in just buying a name. Durability certainly matters, but it is going on a .22. Lighter weight is nice - but it is an all steel gun with a 6.5" barrel. So, what do you think?