They will always hold there price and as there get less and less of them you will never loose money if you wanted to sell on again! been wanting one for years but the price has alway put me off! But after driving around for a bit now i can say its worth every penny
I use scholl concepts s3 gold. All rounder. Is very good and you can't really go wrong. It's literally a one step application with a microfibre pad or a scholl spider pad. It has polish in aswel so you can literally work it in and not really have to worry too much