Phillips Sonicare Substitute Replacement Heads

[Edinburgh]

For years I purchased Sonisoft replacement heads for my Phillips Sonicare Electric Toothbrush. Not only were they cheaper than the name brand, but they were also softer without being too soft. I much preferred them to the name brand as they were easier on the gums without being too soft.

Unfortunately, Sonisoft seems to have disappeared and their toothbrush replacement heads are no longer available.

Can anyone recommend another replacement head for the Phillips Sonicare Electric Toothbrush?