Pros and cons with both
The bottle
pro. its portable
pro. keep it if you sell the rig
pro. nice blast of air for setting beads
con. expencive
con. its portable (easily stolen)
con. when its empty your done
con. could exlode on impact (preasurized cyl.)
con. cost money and time to get refiled
con. takes up space in the back of the rig
con. its cold
OBA.
pro. its always there on your rig
pro. you always have unlimeted air supply
pro. cheap to put together
pro. hard to steal
pro. dosent take up space in the back of your rig
pro. sets beads and runs air tools all day long.
cons. cant think of any.
In the end both methods are better than not having air. Its all in what suits your needs and if you want limited air or unlimited air
