We've stuck to a fairly basic stash throughout. We have a few pretties, but when Rhys was in nappies our basic was bamboozles and I'll use them on the next one too if we ever have another. I've supplemented with a few minki night nappies and a few WN pockets etc, and some wool, but still, I'd say yes, ours have worked out cheaper.
There's also the massive benefit of never having that panic of no nappies left and shops being closed or not having the money to go out and buy some. Your cloth is always there and you can't run out