Well in my experience , proxies are alright they , are actually 89 percent safe.
I have been using them for a quite a long time and havent had a negative connection.
You can stay and survive safe , if you switch proxy on your accounts , every once per month or so .
I had never tried VPNs as I dont have any money to purchase .
Your biggest shot would be to buy elite proxies as you can use one per account .
That way your accounts are far from safe to each othere.