Those are actually ok for the price. (On a scale of POS - $25,000), and will make pretty designs with the steam arm and some practice.
It all comes down to having perfect beans, a decent grinder, proper grind, exact input/output weights, perfect technique & repeatable pressure & temperature. If you're flying blind on any of those things it is impossible to have repeatable Heisenberg pulls. The machine itself is a small part of the equation if you know what it is doing and how to manipulate it.
Real espresso is an art & a science, can never really be 'mastered' (you are always chasing 'better') and requires a serious commitment to really become proficient.
Anyone passing through the M-town is always welcome to stop by the Three-Six SpressoLab for a pull or three.