i watched the review and they said if you adjust the height of the connection on mod, it's too loose and woobly. Yes you can adjust it from atty instead and solve the problem but a lot had complained about it hence they release the plus version with spring loaded connection.
Don't take it offended, I am just saying what I saw on bunch of reviews. I am sure it's still fine mod. That's why I bought it after a lot of research. Not bashing at all.