I think you will be happy with the new enclosure and heat panel!
For those of you discussing the plug style of the pro products panels, I also did not like the plugs they are shipped with. It's literally the only thing I wasn't satisfied with when I purchased my panels. Apparently they have to ship with those because of something to do with their UL listing (has to be a plug that is super simple to install I guess). For about $3 each I bought and installed heavy duty plugs that don't take up the space next to them.
For those who say they don't know electrical, that's alright! You don't need to know for this operation. You just need to follow the incredibly easy instructions and have a set of basic wire strippers and a flathead screw driver. You just strip 1/2" of the wire insulation off, put it in the terminal (making sure hot vs. neutral are on the right terminals) and screw it down. It was easier than brushing my teeth!
But that's just what I did, and I really like the heavy duty plugs better. They feel more secure in my herpstat anyway. Overall, as I've said in other posts, I am super satisfied with pro products heat panels. I wouldn't use anything else at this point.