resin

Which would you choose? It's nearly time for the car's first detail of the year and I need a good, slightly abrasive polish to cut back a couple of light marks and swirls. I have heard equally good things about both products but the fact that I can obtain the latter in Halfords, puts me...

I have small spots of what looks like tree resin or something on my paintwork, that is proving hard to remove. Does anyone know of any product or substance that will soften and remove it without damaging paintwork ?