Difficult to tell from their website. I think the best idea would be to go to somewhere like Currys where you could look inside them, then see if Argos do the one you like.
But in any case the question seemed to be suggesting the SS was something to be wary of and questioned, because, presumably, they wanted another white interior.
To clarify. The last 3 microwaves I've bought have all started to peel inside the door. It's quite easy to understand. I want a microwave with a stainless steel interior so this does not happen again. I have given them away even though in perfect working condition because I don't want to use them any more. I am looking for one from Argos, because I have a money off coupon to spend there. I'm looking for help in buying one. I think that's perfectly clear. T I A