A couple of weapons questions

Hello 'Formers!
So I have a noobish question aobut the weapons. I've been building up some 'Formers, and I'm wondering if I should give them some weapons. I'm not going to ask which one is best, but instead if you fine folks could give some info on the differences between them? I would assume, as per standard game rules of most RPG's, that the more you spend on it, the better it is (usually). However, I do have a second part of it. Are all 'Formers good with any weapon, or are certain alt-modes better with certain weapons?
I'd assume that their all about equal, more or less, depending more on the stats of the 'Former than the weapon specifically. Am I right?
So I have a noobish question aobut the weapons. I've been building up some 'Formers, and I'm wondering if I should give them some weapons. I'm not going to ask which one is best, but instead if you fine folks could give some info on the differences between them? I would assume, as per standard game rules of most RPG's, that the more you spend on it, the better it is (usually). However, I do have a second part of it. Are all 'Formers good with any weapon, or are certain alt-modes better with certain weapons?
I'd assume that their all about equal, more or less, depending more on the stats of the 'Former than the weapon specifically. Am I right?