Marketing or quality. What's more preferred for start ups?

Startups usually are usually lean on resources. Then, rather than choose prioritize: concentrate resources first on creating a meaningful and quality product and then on marketing it properly.

A quality product or service is fundamental to get rotation and repetition from your customers. Since you are just starting, failing the first time may close customer doors forever. You can't afford that.

A top quality product markets by itself almost. A good quality product will ease your marketing strategy.

Regarding budget, there are many marketing strategies with low associated cost that will work to get you into your first customers without any hesitation about the output and result of your product or service.

Provide quality product--grapevine influence--media influence and your marketing efforts all will contribute and pay for your hard efforts.

I believe marketing is a core important factor while launching any product or services in the market. Once the product or services are well known and adapted by the consumers, quality can later be changed from good to very good.  

Both are needed,but for me marketing first then2nd quality.why i have to say like this.In a field of sailing item,we knew already that we have a lot of competator.Even we have a good quality product if no one will intoduce it will not sale.As a costumer i will prepare to choose the product which is well known and i have idea from indorser.thanks