H&R 20ga slug gun question

[strutnva]

I read great things about these guns in the 20ga for accuracy and performance.  I notice that H&R makes 3 different heavy barrel models.  The Ultra Slug, Ultra Slug Deluxe, and Ultra Slug Thumbhole Stock.  For someone who knows the H&R line, do each of these guns have the same barrel and performance will be similar between these models or is one the these "better" than the other two?  Thanks for any help.

[alclark2]

My cousin is a huge fan of his thumbhole stock H&R. I can't say anything for the barrels though.