"Q: Is there any masks that any of you used, and had trouble with? Seems as though most newer styles are well built."
The SUL carbon/plastic frame is a no-no. I have seen a cracked one and heard and read of many stories of injuries due to this mask. There is a thread on that very problem and how it was a big factor in the demise of +POS as a company/supplier by Don Parsons of +POS ownership/family here on another forum back in December.
Another +POS mask made of coated aluminum/metal with hollow tubing. Also called a Super Ultra-light with a number (I think SUL300). I had a partner with a big dent in that model mask over his right eye area. I asked him why he was still wearing the mask? His reply: "I paid $80 for it. I'm going to wear it until it doesn't protect me anymore." I certainly hope he does not find out the hard way.
Since +POS is now out of business you don't have to worry too much. I would not buy a used +POS mask of any model though.
I don't know of any of the newer model Wilson's like dyna-lite, Chrome Moliben/New-view denting. Of course, Titanium is your best be so far for lightweight and strength combination.
The Schutt/Diamond that is now selling in silver and black rubber coating have weld spots where the horizontal and vertical bars meet and are made of what appears to be a light aircraft grade cast aluminum. I have seen a black one with the rubber coating cracking off but have heard of no problems with these masks.
Hope this helps.