Homebrew PCBs

Hi - new to this group, so "Hello"!

Anyway, I've been using acetone to do the final clean of my copper 
before ironing (scrub with abrasive rubber, scrub with Scotchbrite, 
rinse, acetone & lint-free paper towel, iron/GBC, etch (hot sodium 
persulphate), acetone clean).

The acetone I'm using is lab-grade, 99.something% and definitely not 
nail-varnish remover etc.

I was wondering is Methylated Spirits (as we call it in the UK) would 
be a better or easier degreaser - it's certainly cheaper and more 
readily available... or propan-2-ol, aka isopropyl alcohol or ipa?

IPA is nasty stuff and can lead to blinding headaches if used in a 
confined space with poor ventilation...

Thanks

Nick