NY, Which New Balance model do you wear? I am currently wearing the 1260's. I don't have a particularly wide foot, but I think i do need room in the toe box which the 1260's provide. Nike's do run a bit more narrow, IMO.

I think the idea behind training shoes is that they are lower profile, and give more stability when lifting. Honestly, I'm not lifting anything that serious, that my running shoes don't suffice. But, sometimes i feel like I'm tripping over my own feet in these clunky, yet comfortable New Balances. New Balance does have training specific sneakers but they feel a little tight in the toe box. The training sneakers also feel really stiff, with little cushioning. I'm thinking I might just try to get some slimmer running shoes.
I'm good in the insole department. I have some SuperFeet for my cycling shoes, and the NB insoles are just right for me.