Taxes are paid and then spent on stuff, that's how governemnt works. There is never going to be a situation where that isn't true, no matter who you vote for. Each party is going to have it's priorities and those are what you're voting for, but I pretty much guarantee that no party is ever going do exactly what you the voter would do if you were in power.
So instead of just moaning about how all the parties are the same, read their policies in detail, decide which suits you and vote! Only by exercising your right to choose can we ever hope to influence the way in which we're governed (however small that influence may be).
Failing that, stand and find out exactly how many other people support you and you brilliant/mental policies for a happier Britain!