Hop On Hop Off Milan vs Public Transport

[jainnorton]

I'm debating whether to use Hop On Hop Off Milan or rely on Milan's metro and trams. Public transport seems efficient and budget-friendly, but the bus tours look more convenient for sightseeing. Has anyone compared both options? Do these Milan bus tours provide enough value in terms of comfort, accessibility, and ease of travel? I'm especially interested in knowing if they help save time or if they're slower compared to local transport.