2.5 core2duo vs i5 vs i7

hello,

i currently have a 2.5gHZ core 2 duo,
4gb of g-skill 1066,
sapphire 5770 OC version,
windows 7,

and im looking at upgrading the CPU to, either an i5 or i7
this mean, new ram motherboard and cpu

i can get an i5 setup with, i5 611 3.33gHZ, 4gb kingston 2000mhz (ddr3 of course) and a gigabyte GA-H55M-USB3 [Intel H55/LGA1156
for $540 flat

or
i7 2600 3.4gHZ , Gigabyte GA-X58A-UD3R [Intel X58 , kingston 2000mhz
for $777

is it worth spending the extra money on the i7????
+ is it even worth upgrading to i5 * i know i7 just kicks ass*

Worth the upgrade, yes. One small problem with your second choice, you can't fit a socket 1155 CPU into a socket 1366 motherboard. Also kind of hard to price it out at the moment as most if not all retailers have pulled the new 1155 boards because of this,

Intel Discloses Chip Glitch

hey, yea sorry my mistake. a similar board same price.
thats the first time ive seen such a costly glitch by intel :S
thanks, appreciate it