I'm using an Ariens 91020 from the mid 70's and it still works fine. This summer the housing is going to get blasted and repainted and I'm going to install one of the rubber wiper kits as well but so far in all but really wet snow it does fine. I'm hoping the rubber wiper kit solves the distance problem with wet snow. I'm betting if this was a 8HP unit and not a 5HP unit it would do a bit better in slushy snow. Buying a new unit I'd go for around 8HP and hopefully a bit better distance. At least the old tank is easy to work on.