the solo is on my list to get.been using the original style sled for years. its a great tool! it will take quite a bit of recoil off without using weight bags and will still recoil enough to feel but get you through longer sessions without getting all beat up. when shooting heavy recoil guns like slug guns and rifles like my 338 i try to set up so im sitting at the table comfortably square and shouldering the gun 90 degrees.works great and no damage to stock-gun or scope in years of use. you can fine tune your set up with a tweek of the spinner dial. much better than any sand bag. i believe people waste ammo and complain about accuracy in there guns because they cant get a good enough comfortable rest for a long session at the range.