For a cylinder I highly recommend a basic 3000psi aluminium for starters, this only costs £30 to £40
A fibre cylinder allows you a wider choice of shapes and sizes, plus (if fills are available) 50% more capacity when filled at 4500psi. If the higher pressure is not available then it's just a very expensive bottle
The fibre is lighter then the equivalent aluminium, but unless you spend much more on ultra light designs then it's not that noticable
An aluminium can be treated with less care. If you scratch or bash a fibre then if it goes through the top coating and affects the fibre wrap then you have an expensive paper weight
You should buy a 4500psi because it is the right shape / size to ergonomicaly fit you and your gun
Any cylinder can be used for a maximum of 5 years before it requires a hydro test*, fibre cylinders have a maximum life of 15 years, aluminium / steel cylinders have no final expiry
* actually aluminium cylinders can be used for 10 years before testing. Not everyone is aware, and sites may refuse to allow it to be used)
Some also may be exempt from testing
It's not usually financially viable to test an aluminium cylinder when you can buy a new one, but if it is tested and stays good then it can be used forever. Either way for air to £ fibre cylinders are not vfm compared to aluminium even buying a new one every 5 years is cheaper then fibre
http://www.oaklandsfestival.host56.com/web_documents/air information.pdf
A fibre cylinder allows you a wider choice of shapes and sizes, plus (if fills are available) 50% more capacity when filled at 4500psi. If the higher pressure is not available then it's just a very expensive bottle
The fibre is lighter then the equivalent aluminium, but unless you spend much more on ultra light designs then it's not that noticable
An aluminium can be treated with less care. If you scratch or bash a fibre then if it goes through the top coating and affects the fibre wrap then you have an expensive paper weight
You should buy a 4500psi because it is the right shape / size to ergonomicaly fit you and your gun
Any cylinder can be used for a maximum of 5 years before it requires a hydro test*, fibre cylinders have a maximum life of 15 years, aluminium / steel cylinders have no final expiry
* actually aluminium cylinders can be used for 10 years before testing. Not everyone is aware, and sites may refuse to allow it to be used)
Some also may be exempt from testing
It's not usually financially viable to test an aluminium cylinder when you can buy a new one, but if it is tested and stays good then it can be used forever. Either way for air to £ fibre cylinders are not vfm compared to aluminium even buying a new one every 5 years is cheaper then fibre
http://www.oaklandsfestival.host56.com/web_documents/air information.pdf