If you are satisfied with your current coverage/service with Sprint, then why consider changing carriers? By all means go into a physical store and test the heck out of any prospective device you plan on using as an upgrade.
That said, I believe you could do just fine with the EVO, although it's certainly not the only device that would work for what you've indicated you need. Sprint also offers the Samsung Epic and Instinct HD that might work too. I am a little surprised though that you don't already have a standalone GPS unit already in your truck, since those are going to provide perhaps the best GPS service being a dedicated device. Also, why not utilize the laptop for watching movies since the screen size is better and you already have it in the truck, I presume(?)
I have been with Sprint for over 3 years. I have a basic flip-phone. It has the basics.
I am an Over-The-Road Truck Driver and depend on my phone to stay in touch with family. We have two phones and I have a wireless device for my laptop when I am on the road. We switched from T-Mobile because of too many 'dead spots'.
I am looking at getting a new phone. I would like one that allows me to use the internet, take pictures & video, watch movies, listen to music. It also must have some sort of GPS Navigation. I use this extensively in my job to find customers. Nation-wide coverage is a must!
I am currently eligible for an up-grade with Sprint. I can get the new EVO for practically nothing...but I'm not sure if it will provide all I want.
I don't know if I should stay with Sprint or switch carriers...and I have NO IDEA which phones would siut my needs.
I really need help. THX!