Hi. 11YO DS is now preparing grade 7 piano. Ever since he started learning at age 7 we've had a digital piano, Yamaha Arius to be precise, which has obviously served him well. I realise it is high time we got him an upright piano but I just feel overwhelmed by the whole thing and put off by the fact that it will have no volume control, which will massively restrict when DS can practise. DH and I are considering a top of the range digital piano, budget around 5K. I would be very grateful for some advice and recommendations. DS also plays other instruments but in all honesty, music is not his life, not yet anyway. DD aged 8 plays too. Many thanks.