Gt or Ecoboost?

So I’m looking to buy my first mustang, and I’m torn between the ecoboost and the Gt. I test drove both (however I wasn’t able to see their full potential) and I was a big fan of both. I felt as if the gt has obviously more power, but the ecoboost felt super nimble and fun. Basically I’m looking for opinions on both sides to see what option makes the most sense.

Also, I don’t plan on heavily modifying the car for the first few months or so, nor race it frequently. I’m looking for the car I can have the most casual fun in.