<p>I would suggest running this by the trumpet teacher.</p>
<p>There is a comparison of the two instruments on the last page of <a href=“http://www.bachbrass.com/pdf/BATRP.PDF[/url]”>http://www.bachbrass.com/pdf/BATRP.PDF</a></p>
<p>Note that the 1530 does not have a tuning slide. If your son is used to having this feature, he will probably think the 1530 is a step backwards. Otherwise, it is a matter of how soon the teacher wants to introduce the use of the slide for fine tuning the pitch.</p>
<p>What are the terms of the rental agreement? Many places will substitute a similar instrument with no questions asked if you are displeased with the current one. You might be able to start with what they have and then move on to a different instrument later.</p>