Garmin lake maps chip, any good for Oklahoma?

I've mainly been a lowrance/navionics chart user, but am looking for a decent handheld to use on my little boat out here in the middle of OK. My main lakes are Canton, Sooner, and Carl Blackwell. Does the Garmin chip (I think it is their Southwest region one) include any useful topo info on any of these lake, or should I just save myself the $100 and live with what is on their basic GPS. I'm looking at the GPS 78 from Amazon for a bit over $160.

Pissed Lowrance discontinued the I-Finder H2O, that was a simple and reliable chartplotting handheld, even if you could never find the 12V adapter for it. Now they don't even sell a handheld GPS

What lakes are you interested in? I can check them out on my Garmin US Inland lake CD.

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Originally Posted by Shellback

What lakes are you interested in? I can check them out on my Garmin US Inland lake CD.

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Thanks Shellback. I'm mainly interested to see if they show the river channel and underwater humps on Canton Lake, and any information on Lake Carl Blackwell. Sooner Lake is supposed to be the LMB lake in Oklahoma, so any good chart info on it would be nice. I think the CD has all the lakes Garmin covers, the chips are the same info broken down into regions.

Viewing the 2010 Mapsource Inland Lake CD, Sooner lake and Canton lake have contours, nothing but an outline for Blackwell. I have a new Garmin 70DV with built in maps, I'll see what that shows.

What kind of chip does the handheld you are looking at use?

I took pictures of my computer screen showing the Mapsource images. The quality isn't very good, but you might get the idea what the map chip would show.Attachment 178444Attachment 178445Attachment 178446

Thanks for the pictures. Those would work fine on Canton and Sooner, guess I may have to buy the chips. Looking at a Garmin 78, standard micro SD chips. Wish they were Navionics compatible though.

Check your PM's