Would members please suggest good traditional Tubas that are both available second hand (my budget is relatively limited) and match my simple specification: three axial valves - non-compensating – Eb - built in low pitch (A 440). I’d be glad to hear suggestions of both models to look out for and those best avoided too. For my use the downsides of both just three and non-compensating valves are of relatively little importance. Compensating and fourth valves add (unwanted) weight and cost, a fourth valve will also be little needed for the pieces that I play. For my use a cheaper used instrument makes more economic sense than buying something young and blemish free. The features I value most are: dynamic range, tone and accurate slotting of the harmonics (after tuning the instrument’s middle C to Eb standard/concert pitch the other ‘open’ notes should be neither sharp nor flat).