The Grandi Groomer (the first one) is great for loosening traffic lanes and in general areas prior to vacuum as well as agitation, I realised how much it works after using it following a good vac with a Sebo and it kicked up no end of dust. A quick run over prior to vac will loosen all sorts. Also great for post clean grooming. The other is for general agitation. Both will do the job but if I was only getting one it would be the Grandi Groomer. As I said I would have both and I realise you're on a budget, but if you can get both. £45 inc vat for descent kit is not too much and they will serve you long and well.