Other.....Baikal MP-153 semi auto 12 gauge, 3 1/2 supermag, and a H&R Tamer 410 single shot nickel with built in shell holder in the stock.
I had a 12 gauge Remington 870 supermag, but I'm not sure if it was just a lemon in my case, but it really sucked. I could'nt never get it to cycle more than 10 rounds in a row without a jam or failure to extract....big POS. Had it to 2 different gunsmiths, and knowone could ever get it to work properly. I hear the regular 3 inch models don't have these problems though.
My next shotgun will be a quality $2000 + O/U for skeet.