Love a good hand cannon...finding one is hard, clip size can destroy the usability of a strong HC. My primary HC I use with every guardian, will one shot (crit) most baddies. With explosive the small stuff dies en-mass.
Second go-to is a scout. Most I have found are fairly good. I just have found it hard after my HC one shot to switch even for the range.
I like pulse too, but a big issue is I haven't found many (1, has sick stability) with usable impact stats.
I don't mind AR'S but haven't found one I like to play with.