What lowrance chip for x-mas?????

I have a lowrance depth finder/gps unit in my boat console but i was wondewring what chip i should buy myself for christmas. Do i want the $199.00 nvionics or something else, someone with knowledge please help me. Also do they have a chip with all states on it or just by the regions. I mainly fish ky but some in tnn and some in fl. thanks for the help in advance.

Bigrod: Here`s some info, you decide.

[url]http://www.lei-extras.com/store/FHSElite/default.asp[/url]

[url]http://www.thetwistergroup.com/product/108-184%20W03702.html[/url].

[url]http://www.thetwistergroup.com/store/customer/search.php?substring=108-183[/url]

I have the east and the south. I haven`t had them on the water, but done simulation runs on Lake George in Florida and Rough river lake in Ky. Very detailed on both lakes.

Good luck, Tom. PS: I bought mine from the Twister group, delivery was 4/5 days.