The echomap plus and striker use the same transducer, and if memory serves me, the same pixel count on the screen.
As stated above, the main difference is mapping, and no micro SD card slot.
Get on Garmin site, I think the striker plus can also do quikdraw (a selfmapping feature).
I had echomap plus units, 73sv. Zero complaints. Garmin customer service is top notch. A buddy bought the units from me. Had some issues with setting up the account. He called Garmin, they got him going.
If you fish the same body of water, or know the areas you frequent, save the money and get the striker plus.
Drinkin coffee, missin fish.