Same as, i was using grip bal on a job today and said to customer dont waste your money, take it back get a refund and ill get toppfix for trade price and settle the bill at the end.
I used 1 tub of grip and didn think it was eccesery to use 8 more tubs of £30 adheive, im using toppfix and i love the stuff, bit wet at the top but for the price im not complainig and neither are my customers.
Hopfully ill get a tip for my advice on this one as ill probably save for £130 on adhesive