Looking for good amp under 300

[andyc039 10+ year member]

I am about to order a jbl amp. Is there a difference between the bp1200.1 and the gto1201.1 which should i choose?

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5710119778&category=1498&sspagename=rvi:1:2

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=18797&item=5714501591&rd=1&ssPageName=WDVW

 

[SubCool 10+ year member]

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=18797&item=5714031030&rd=1&ssPageName=WDVW
Does it need to be 1 ohm stable?

Also, is this amp going to maximize power to my subs. I don't know much about wiring, but I do know that my subs are 400rms. if its 787x1 at 4 ohms. doesnt that mean its sending 393w rms to each sub?

Its Stable at 1ohm.. but u dont get any extra power.