I love it over my old i phone 4
It only cost me £99 to upgrade, on a £36 per month contract. I sold my old phone for £250, this enabled me to buy new bling for my bike 🙂 a rp23 new second hand and xtr rear shifter, I love them both.
Feels great when using it, thinner, lighter and quicker.
Camera is amazing for a phone.
Larger, clearer screen.
You can sync to I pads, and tether your 3G from your phone so you can use I pad whilst travelling without buying more expensive i pads.
Most phones do amazing things now, it just comes down to what you can afford. You could upgrade phones and sell the 5 for £480 +
Good luck