I am watching this nervously having bought the 8900 only last week. , So far everyone has been pro the Janomes phew! Hopefully, I will feel the same once I have put it through it's paces. It does feel like driving a formula one car for the first time though.
My 4800 has given 13 years of service and will be kept for workshops if I need a swing needle and for my 7yr old grandson who is learning.