We use skulabs at our warehouse with different built in zones. The software works well most of the time, and the glitches we have ran into have been rectified by SKULabs support.
Scan to batch has worked out well for us.
We use SKU labs every day - it works great for our business and they are quick to help with issues. There are definitely some features that they need to improve on such as the way there kits are structured and that you can't see if a product was barcode scanned. We continue to give them feature ideas and hope to see them developed in the future but it is great for our needs right now.