Tesco value voddy.
Don't worry it doesn't taste like vodka, just pain stripper (Y)
On a slightly more serious note, people who say they hate vodka don't often mean they hate vodka as a whole, but Smirnoff and other cheap horrible vodkas. That's like saying you hate wine after just trying Blossom Hill. Smirnoff tastes like crap compared to others.
Edit: I'm actually more than happy to drink Smirnoff with a mixer, it does what it says on the tin and treats me well the next morning. I'm just repeating the words of a Ukrainian who's in the past had vodka straight with breakfast.