I have a Canon t1i with External Canon 430ex ii flash. It seems the turbo ones are abit expensive so what would be under that model where I will get excellent refresh rate
The Quantum QB1C Compact would be fine for your 430EX. It will mount under the camera, like a battery grip. It has enough power to let you fry that 430.
I have a Quantum power pack that has lasted me for 18 years. Its a workhorse of a pack and has gotten me through day long shoots without having to recharge. Whichever type you get, make sure you recharge it AS SOON as you are done using it. This will help the battery last a lot longer then if you leave it laying around half charged.