For me the Stagg is kind of an evolution of the bass guitar, in the direction of the acoustic bass. The SLB is an evolution of the acoustic bass. If acoustic bass is your reference point then the Stagg has many potential frustrations, but if the bass guitar is your reference, or you have little/no experience of upright, then the Stagg is a good gateway and certainly better value for money than what you'd get if you spent the same on what would be a 'cheap' acoustic DB.