Bosch do excellent blades, and accessories generally.
Makita are stocked less widely (on the internet at least), and sometimes difficult to get, but are often as cheap or cheaper than Bosch with, IME, the same quality.
If you are doing demolition where it may be necessary to cut through metal as well as timber (or where there may be embedded nails, screws or bolts) then cheap blades simply don't hack it - they either blunt immediately they hit a piece of metal, or if they are really thin they'll just end up buckling or concertina-ing under the strain which is why Toolpak/Silverline are only any good for cutting-up thin matchboard bunny huts! A decent demolition or rescue blade will never do that. They are thicker (so stronger) but lower-powered saws can struggle with them. Best generally available brands I've found to date are deWalt and Milwaukee (Hilti are also good but hard to come by)
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