Sugden V Accuphase

Hi all,
This is my first post so take it easy on me.
I notice there are a few Accuphase owners on this forum, but not sure about Sugden.
I have a Masterclass IA-4 and have been recently tempted by an Accuphase E350 and wondered if anyone had experience of the two amps and curious to know if you thought it would be a mistake to change from Sugden to Accuphase?
I realise the IA-4 is Class A and the Accuphase is A-B so sonically bound to be a difference, but would it one I'm likely to dislike?
Thank you in advance.