You can also get a 4500psi HPA tank to have some more playing time and less refills..
The value of less fills is relative, and more playing time is not a factor to most games (more time between fills perhaps)
At walkons and tournaments you are going in and out of the field regularly. Unless the air system cannot cope there is no hardship in refilling
(And make it a habit to fill as you leave a game and top up if required as you enter)
The extra of 4500 fills is not available throughout the UK by default
If at a constant play event then the amount of air on your person may affect your game time.
You stop when eliminated (but may respawn in game) and can only shoot as much paint as you carry
Event organisers think about that, and in addition to bringing in hpac etc for 4500fills it is sometimes found that sites put in mobile fill stations in game, and the number of sites with permanent in field mini safe zones and fill stations has increased
A fibre wrap 4500 cylinder is not the greatest thing since sliced bread. Paying an extra £120 compared to a 3000psi aluminium cyljnder is not necessarily worth the money to a player who could be putting that money to game fees and paint
The real value in fibre cylinders is the range of sizes and shapes
For a player who asks what to get when they already have a standard cyljnder then a fibre is not the answer
The player will know when they need/want a fibre