They all have iflash SD solo or quad adapters. Only one with rockbox for trying it out. I think iflash solo is the most reliable, if the storage is sufficient. Working on them is OK, after you open it for the first time. Gen5 is nicer to work on than Gen6, but lacks cover flow. I recommend the flat metal openers, the plastic ones suck. Have some plaatic delicate tweezers and pry tools handy for the interior. It is not too difficult, be courageous!
They all have iflash SD solo or quad adapters. Only one with rockbox for trying it out. I think iflash solo is the most reliable, if the storage is sufficient. Working on them is OK, after you open it for the first time. Gen5 is nicer to work on than Gen6, but lacks cover flow. I recommend the flat metal openers, the plastic ones suck. Have some plaatic delicate tweezers and pry tools handy for the interior. It is not too difficult, be courageous!