Most of us here is from S3 and some of them have their main account in S1 while part timing in S3 with us =)

My account in China iOS server

played since June 2014... never spend any real money, only have 8 main heroes...
Lucas (Paladin) is not that good at the beginning, but reaching Orange he can tank with quite good armor (for player dont want use real money, train him)

if you dont use real money, just train the normal heroes it give, they are quite good later on... new heroes coming out are meant for real money player