Change in Insulin pump?

Dear friends,

I am a TYPE-1 diabetic and I’m on medtronic insulin pump for the last two years . As my warranty period is about to be over I’m planning to change my pump .

I saw an add for ACCU CHECK COMBO INSULIN PUMP . As i have no idea about its practical use . Kindly help me out .
I don’t have an insurance and so I’m suppose to spend it out of my own pocket for procurement of new insulin pump .

Kindly do let me know the price . Is it advisable to move to ACCU CHECK INSULIN PUMP ?
Help me out with your valuable suggestions and advice .

Regards,
VINODH