Should i take my watches to Italy? should I worry about customs?

[SubKing]

I'm traveling to italy for over 2 weeks and i wanted to take a couple watches with me.. some of them are 30k+ and i have heard storys of customs giving people a hard time? should i take an invoice with me as proof of purchase so they don't think i bought them there?

any one have any advise? I won't take all my watches but maybe 2 or 3.. wanted a selection for my trip.

any advise would be great.

thanks all.