have you fully upgraded your gem mine?

Usual order - for me - goes Masteries for starter, Gem Mine, Market slots, energy refills assuming you've got 130 as your max energy. 

Hi    

yes  my  main  account  the  mine  is  maxed  and  i  have  over  2k  energy.  I  forget  the  smaller  energy  number  but  km  over  2k

i  usually get  xp  boosts  and  once  in  a  looooong  whkle  ancient  shards  pack  for  900  gems,  actually ive  only  done  that  once  maybe  twice

masteries  i  dont  bother  with  just  yet  except  i  have  done  my  fav  champs  but  i  play  the  Minotaur for  those.  Never  had  the  gems  for  masteries.

I suppose your situation is a bit difference since you have that built up store of energy. XP boosts seem fine, though a bit expensive. As long as you're trying to work through that energy while you have the boost up. 

Early game your energy should always be 0. 2k energy is absolutely worst thing you can have. 

Use that energy! 0_0

Making me nervous just HEARING about all that wasted energy. 480 energy PER DAY.

I  had  over  4k  and  played  a  lot

now i dont  have  the  patience  to  do  more  then  the  40  auto  battles  i  can  do  per  day

i  do  though  a  few manuals  for  missions  though  or  daily  weekly  quests

i  use  gems  on  xp  boosts  99.9%  and  once  in  a  very  long  while  ancient  shard  pack

no  idea  if  theres  any  better  ise  for  gems  right  now

i  dont  buy  xp  boosts  every time  i  run  out  of  the  boost  time  even  though  i  usually  have  the  280  needed  for  3  days

Use gems for:

• Ancient shards (900gems = x11 Ancient shards or 270gems = x3 Ancient shards)
• Unlocking All Masteries for those champs u got lvl.60 (there no point unlocking lower than lvl.60 i used to do that and had too many full masteries on lvl.50 champs )
• Arena tokens and refresh (if u are PvP kinda plyr)

I think ancients are pretty rough for most F2P unless later in the game and if you're trying to finish Champ Chase, fusion or otherwise. Even then the 3 shards are always quite terrible. 11 is passable, barely.

when ancient summons events start and u have x7 ancient or x17 or x27 or x37 or 3less than full ten...

those x3 more to have full ten pull... 

270gems its nothin u can make then in few hrs....

buying energy is waste...  in few days u can stock 2-3k energy esy...

yes as F2P OFC what else xDDD

That advice is even worse for F2P. 

Grinding out 60s, gear, etc. is almost always better than gems on shards.

If you are doing everything wrong it really doesn't matter what you waste gems on :)

As someone who 14 months ago you would've yelled "12-3" at repeatedly due to having more 40s/50s than 60s...can confirm 

Thanks  guys    

i  did  buy  ancient shards  for  900 and  got  one  or  two  epic  that  were  rated  4.7-4.9  for  most  game  areas.  I  think  this  was  the  last  2x  legendary  chance  within  the  last  5  days  or  so.

xp  boost  mostly  is  good  i  think,  but  i  dont  have  patience  beyond the  40  autos  i  get  daily.

it  takes  me  very  long  time  to  get  900  gems.  over  a  week.