choosing a pole?!?!?

Hey everyone! I'm Tam, and I'm VERY new to pole dancing 😜 I've just signed up to be lessons and thought if I like'em I'll buy a pole and start practising. Well, I like the lessons 🥂 ! I live in the UK so I'll probably not buy from this site because shipping would be a fortune... Anyway the X pole seems the most popular, but so many to choose from, I'm not sure which to go for or what to take into consideration! I'm sure there is an article or something on it but I couldn't find anything except on how to set up the pole, yeah I know, I'm simple 🤐 I'm also unsure as whether to choose a 45mm or 50mm... Anyway I also wanted to say hello 😀 as I said I'm new here and still don't know anyone 😉 Thank you for your help!