I was looking to swap the zs for a zt or zt-t a month or so ago due to growing family and the only reason we didn't is as I wanted the tourer (space wise) and the mrs prefers the saloon (she likes pretty much any mg with a spoiler) and she wasn't keen on the back of the tourer from inside so we decided to stick with the zs. Am now contemplating another zs but depending what happens it may just mean more things for the current one.
I'm 27 & the mrs is 24 so I don't think on our part that to drive a zt you have to be old. They are a very nice looking car that imo is sporty whilst quite sophisticated too.
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Love the sound of the VEEEE 6.!!! Its like to my ears.