Depends, Nomak.
Twoface(flying as 'tufee') is one of the best 109 pilots in the MA although he's rarely seen nowadays. He used to fly a lot a few years back, when the familiar faces such as rraf, feed, supongo, hblair.. etc etc.. were around. Some of you might remember him.
Twoface is one of the pilots who uses 3x20mm loadouts. This offers triple firing 20mm cannons with 400 rounds, and is almost in league with the firepower of the Fw190A-5. Twoface is a good pilot, but he's one of those who emphasizes powerful snapshots and quick kills over the precision gunnery and dead-heat maneuvering required when using a single 30mm.
If you're in a position to keep the loss of speed, climb, and rollrate under control, taking gondolas actually might be a lot better. Especially if you aren't much confident in gunnery.
30mms run out quick, and they are hard to hit. Unless it's a pure and clean bounce, or, an optimum firing opportunity arises like in the case I've wrote in the previous post, against enemies that are aware of your presence and will enter defensive maneuvers it is dang hard to land. Taking even short snapshots can be a waste, and you have to maneuver a lot to really get that 'perfect' opportunity.
A P-51 or F4U might spray a little .50s time to time during maneuvers for hopes of a lucky shot or a cockpit shot.. but you can't do that in a G-10. You have to maneuver, maneuver, and maneuver.. until the enemy is at deck, runs out of all E, and you finally get that 'perfect chance' you are waiting for. That's the hardships of using single 30mm cannon for the average 109 pilot. Usually by the time you work your prettythang off to get the target to lose all E, a friendly Spitfire will come and reap what you've sowed so hard instead.
