I'm curious about which strategy is better for getting +5000 trophies in the long term:
(The one I'm using) I'm requesting just one type of card, and spending all my gold upgrading everything the game allows me to in order to obtain experience faster. I never buy more than 4 cards(Rare and Common) in the game store. From my point of view this gives a slow but steady rise of trophies in the game, and usually I have one KT level more than the people with my same level cards on the tower level. But when I face people with my KT level I'm usually behind in cards level, and I never have as much gold since I spend it ASAP.
(The one most of my clanmates and friends use) Most people stay with one deck, so they upgrade those cards and buy a lot of those from the store, spending the gold mostly in the one deck. As they accumulate tons of gold they usually buy the vaults from the store that are on discount. This strategy allows them to accumulate trophies really fast, but they are 2 levels down in TK level.
This is my question: which strategy is better in order to achieve +5000 trophies (I will also accept a different strategy yielding better results). Currently I'm around 3600 and KT level 11, and most of my cards are lvl 10(common), lvl 8(rare), or lvl 2(legendary). I don't use the epics, instead just upgrading them for the experience.