I would look over the stats of either inverted and fortified both are good -I went with fortified in the end - but I seem to think I have used inverted on my alts. Phasers have good options they also have the sensor Linked lockbox ones which really are very good (I have the disruptor versions), but expensive. I also seem to think there might be some good mission rewards for phasers and of course, there are some rep versions - no idea how good they are you need someone who does phaser builds. I also prefer beams so I know what you mean - I did try a cannon build but I found it hard to keep inline.
Do not go for dual beam they are not worth the cost in flexibility - beam arrays (with the correct stats/mods) are better.