As I'm sure I've mentioned once or twice before
I prefer Puncturesafe which plugs the hole *before* the tyre starts deflating, so you don't wreck the sidewalls or have to fix it and then pump it back up again.
Fortunately I've not yet needed it, but it's always good to know it's in there (and, no, before anyone says, it's not the nasty stuff that tyre repairers hate, given that I got it installed by Russ's Tyres in Horndean
)