Sanyo MM-7500

I have had a sanyo 5600 for a while but wanted "something new" bought a A900 too small, battery, etc. Got a deal on a 7500 but smaller than 5600 but a couple of addl features like voice txt, better display (but smaller). Got a "new refurb" 5600 via insurance. Love the size, internal and external screens, and memory of 5600 but not as advance as 7500. Power vision not available in my area and have an unlimited vision plan which i use to check scores, occassional email and weather. But i am a gadget person. Trying to decide if i should sell one or both phones...Looking for ANY input. Thank you for your help!!!