Drive one first, but be aware that the slush 'box in the 370 isn't remotely close in speed to the 458 or 488. Bearing in mind the manual has rev-matching, if that's what you want it for then that may be a better option.
I don't dislike auto boxes with paddle shift, but it has to be the right car personally. I loved my 911 which was PDK and tbh I'd buy another one in a heartbeat, but I wouldn't want an automatic Elise. Half of the joy of the 370 is the fact it's so old school, so I'd have to stay manual on that one. But hey, try them both and see