Hi, my 12 yr old son has progressed well and is sitting his grade 4 whistle shortly. Currently has a Dixon whistle which has done him well so far but he and we think he’s ready for a new one and have promised if he does well in his exam we’ll get him a new whistle. I asked his teacher for recommendations and he suggested John Sindt but have emailed him and he is not currently accepting orders as his backlog is so large. He also suggested Burke but their prices are a little beyond me 
Son is drawn towards brass bodied whistle - can anyone suggest something quality at around £100 mark?? Thanks in advance!