I don't see why people keep rbinging up EK. The best spells for EK don't get any benefit from intelligence. Shield and absorb elements for level 1. They don't exist in bg3 yet which makes EK a useless subclass. You're always better off using an attack instead of a spell for damage as an EK. Except if you really need to hit.. then you have magic missile which also doesn't care about your intelligence..
I am really enjoying using Lae’zel this time through as an Eldritch Knight for a change of pace. It gives her more variety instead of just “pound with sword” (not that I don’t enjoy that as well). I enjoy having someone on the front lines with a decent intelligence (from Headband of Intellect) that can decently use the Ring of Color Spray and touch range spells and scrolls. I suppose that I could still do that with her with items and scrolls as a Battlemaster with the Headband of Intellect, but then I feel as if I’m wasting an opportunity to use her Battlemaster skills. For me, making her an Eldritch Knight forces me to think differently about how she responds in different situations. I am enjoying it, which is the whole point.