[larrywright]

My advice would be the same. These units are mostly built on the same parts, the big difference is build quality (metal dongle vs plastic) and what antenna comes bundled (antenna quality/size matters a lot for anything beyond just tinkering).

[syedkarim]

It's more than just build-quality. The actual RF design is very different. The RTL-SDR V3 dongle was purpose built to be an SDR device. Most of the generic plastic dongles were designed to watch broadcast television.