People pay way too much attention to vodka labels and brands. I've read blind taste tests where Smirnoff ends up being the best reviewed and the high end brands are average. I'm pretty confident if people swear by Goose or another brand, they'll have trouble singling it out against Smirnoff in a taste test.... especially when you're mixing it with juices.
Word of advice, don't spend top dollar if you're just going to mix it with juice or soda, you likely can't tell the difference between that and something mid-range. And if it's a higher quality whiskey or other drink, you're missing out on the flavor and reasons for the high price when you add a mixer.