I agree with Hal, the MFJ kit is jolly good for the price. It does what
it says on the box, just don't expect miracles.
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Endorse that. Using the MFJ259B I have learned a lot about antennas and
matching units (ATUs) ,not just antenna gain ,but also antenna bandwidth
and (for HF freqs) dial settings for matching units.
Whereas the quality and uncertainty figures of the analyser might be
frowned upon by 'professionals', it an excellent device for any radio
amateur climbing the knowledge ladder.

Frank GM0CSZ / KN6WH