The time it takes the tank to fill the reg up to pressure. Some regs have better recharge than others. The best preset is a crossfire, i use a Low pressure (450psi output high pressure is 800-850psi) crossfire as i can use it on my LP angel and on my ego.What does the term 'recharge rate' mean?
but a PMI HP preset will sort you out a treat. Personaly speaking i wouldn't buy an egg. out of the 5 used by various team mates they have all broken down at some point and 3 of them are totaly dead. I've used my reloader B (bought new last summer) for about 14 months now and it has never let me down.
Honestly just for recball i'd use a revvy over the egg any day. Look better, old skool, reliable as hell and feed fast enough. A good one would cost around a £10. As your not putting silly amounts into upping your ion and won't need to put down lazers during games then its cheap good and leaves you a few ££ for a good light airtank.
I'd recommend slothball.com for tha air tank. They have the new PMI ones that can be used in the states and the UK. Thtas also a bonus if you ever come to sell it.