Thomann Keyboard Bag 6

This bag is massive. It easily fits my 88 key stage piano and could probably fit one more and the same time. Its even large enough to be used as a sleeping bag if you're not to big. The quality is OK and I haven't had any problems with it at all. The padding is moderately thick. If you don't care if a bag is too large for you keyboard then buy this. It will get the job done. Plus, it's cheap.

Good build quality. Perfect if you're looking for a soft case without wheels. Did (however very tight) fit my Yamaha Motif ES8. A bit awkward to carry alone, but can be done.