

One thing to be concerned about with the 5V is it doesn’t have all the 4g/5g bands in certain countries (United States, India). Not sure about Australia.
Otherwise as someone who was in your shoes awhile ago, 5V was my dream phone for the small screen and finally addressing the issues the 5 iii and iv had. Ended up going with the 5 iv which is great, but certainly lots of issues. Namely, both the 1 and 5 iii and iv have major overheating issues due to a bad chip.
Also on the Xperias the weird screen ratio takes some getting used to, think I still prefer the more popular ratio.
Like brother, like brother