New to IT

Hi,

I just became an Integrity Toy member for the first time. So far, I've been collecting the nicer Barbie and Defa Lucy dolls.

I haven't seen an IT doll in person, only online, but they look fantastic. I'm hoping that I'll like them a lot in person too! In your experience, how is quality compared to collector Barbie? Does it vary between the different doll lines?

Can clothing be exchanged among the different lines of dolls, and Barbie too? I see that they have different measurements and that the clothes tend to be very tailored, but I thought I'd ask.

I'm not entirely sure I understand the differences between the different lines, e.g. Poppy Parker vs Fashion Royalty. Could someone explain?

In general, any advice for someone new to IT?