Crunch Groundpounder Vs. Crunch Powerzone Help

[1stock04]

i came across these 2 crunch amps the Crunch GP2250 that is rated at

RMS Power Range : 250-500 Watts

Number Of Channels: 2

Maximum Power: 1000 Watts

Built In Crossovers: Yes

Channel Separation: Yes

and this crunch pzi250.2 rated at

RMS Power Range : 250-500 Watts

Number Of Channels: 2

Maximum Power: 1000 Watts

Built In Crossovers: Yes

Channel Separation: Yes

for my subs i have 2hifonic 350 rms 700 max subs

it says both are 500rms at 2ohms so i would wire my subs each one parllel so each one produce a 2ohm load on each channel