I have been thinking of a system from Mini Sport, also. Possibly the Play Mini system. If you go to the Play Mini site there's sound clips. You might also check at newminisport.com
Dion Jardine in Ocala FL sells for Mini Sport and would be a good contact for your questions. djminis.com I may be calling him tomorrow re: Play Mini
Anyone from the UK able to advise on either system? I'm looking for a system that sounds like a LBC should (braaaap!)

not a rice rocket with a 15 gallon shiny coffee can under it (flatulence).