I have the Silhouette Cameo and also the Accuquilt Go Big (electric one). I use the Cameo for cutting cardstock, vinyl and one layer of fabric fused to stablizer. You can certainly do a lot on one, but as far as quilting, I only use it for applique (raw edge fused mostly). since I'm not a big raw edged fused appliquer, I frankly use it more for non fabric projects.
I use the Acuquilt to cut whole quilts in minutes. Yes the dies are pricey--but since I do mostly geometric shape quilt blocks, my strip died bundle get used the most. I think your choice depends entirely on how you intend to use it: Cameo for applique (fused) , paper or vinyl projects, the Go Big for cutting multiple fabric cuts.