i usually climb to rank 5 every season but haven't really bothered to grind all the way to legend (can't get extra stars from win streaks after rank 5)
decks i play include:
- control warrior
- handlock (too many hunters around right now though)
- sometimes shaman, ramp druid, control/deathrattle priest
- used to play miracle rogue before leeroy got nerfed
i disenchant all golden cards except golden legendaries (ysera and malygos) so i have pretty much all the good legendaries (though i have also been pretty lucky with packs too)