Shopping for marine electronics sonar navigation usually comes down to one question: do you want a sonar you can cast from shore or a chartplotter that mounts at the helm? These four options range from USD 125 to USD 450 and split cleanly into portable, phone-connected sonar and a full chartplotter. The bigger decision is about your fishing style: if you move between shore, kayak, and boat decks, a castable unit is easier to pack; if you spend most trips at a helm, a fixed chartplotter with navigation and sonar on one screen is a stronger fit.
Quick take
The two Garmin Striker Cast listings are the same model and condition, so the cheaper one is the straightforward pick for a castable sonar. The Deeper Smart Sonar PRO+ 2 is the more capable castable option. The Garmin echoMAP CHIRP 73sv is the mounted choice with a built-in screen and chartplotting.
Listed price comparison
| Product | Listed price | Price bar |
|---|---|---|
| Garmin Striker Cast Castable Sonar Fish Finder 010-02246-00 | USD 125.00 | |
| Garmin Striker Cast Castable Sonar Fish Finder 010-02246-00 | USD 129.97 | |
| Deeper Smart Sonar PRO+ 2 GPS WiFi Castable Fish Finder DP5H10S10 | USD 199.00 | |
| Garmin echoMAP CHIRP 73sv Fish Finder/Chartplotter - Complete & Working | USD 450.00 |
Decision matrix
| Product | Form | Connectivity | Viewing | Key sonar functions |
|---|---|---|---|---|
| Garmin Striker Cast | Castable | Bluetooth | Mobile device | Fish ID |
| Deeper Smart Sonar PRO+ 2 | Castable | Wi-Fi | Fish Deeper app | Triple Beam sonar, GPS bathymetric mapping |
| Garmin echoMAP CHIRP 73sv | Mounted chartplotter | Wi-Fi, NMEA 2000 | 7-inch color display | CHIRP, ClearVü, SideVü |
Product notes
Garmin Striker Cast Castable Sonar Fish Finder 010-02246-00 (USD 125.00)
This is the lower listed price for the same new castable Garmin. It connects to your phone over Bluetooth, so there is no screen to mount and no wiring to run. The Fish ID feature is part of the package, and the plastic housing keeps it light for shore trips or kayak sessions. The limitation is that the maximum depth is listed as "Varies," which means you won't get a definitive number here. If you want a compact, no-install sonar and the lowest listed price in the group, this is the version to weigh.
Garmin Striker Cast Castable Sonar Fish Finder 010-02246-00 (USD 129.97)
This second Garmin Striker Cast listing is the same model, same new condition, and same phone-connected setup. Because the two listings describe the same product, the decision between them comes down to the listed price. The only difference here is that this one is $4.97 more than the other identical listing. The limitation is identical too: maximum depth is only described as "Varies," and you are fully dependent on your phone for the display. If the lower-priced listing isn't your preference, this one gives you the same sonar experience at a slightly higher listed price.
Deeper Smart Sonar PRO+ 2 GPS WiFi Castable Fish Finder DP5H10S10 NEW (USD 199.00)
This new Deeper moves from Bluetooth to Wi-Fi and adds built-in GPS for bathymetric mapping, a step up in capability compared with the castable Garmin units. The description lists Triple Beam sonar, a casting range up to 330 feet, scanning depth up to 330 feet, and fresh/saltwater use. It works with the Fish Deeper app, so your phone is still the screen. The limitation is the price: it sits above the Garmin castable options, and the unit has no display of its own. If you want GPS mapping from a throwable sonar, this is the one to compare against the Garmin.
Garmin echoMAP CHIRP 73sv Fish Finder/Chartplotter - Complete & Working (USD 450.00)
This used Garmin is the only chartplotter here, with a 7-inch color display and built-in GPS. It supports CHIRP traditional sonar, ClearVü, and SideVü, so it covers both fish finding and navigation from one helm unit. The description includes the CV52HW-TR transducer, power cable, mounting cradle, tilt/swivel mount, and sun cover. The limitation is that it is used, costs the most, and needs 10-20 V DC boat power rather than a simple battery-operated castable. For boaters who want a permanent sonar/navigation screen, this is the complete package in the group.
Final recommendation by use case
For shore, kayak, or cartop fishing, the Deeper Smart Sonar PRO+ 2 suits anglers who want more from a castable unit, while the Garmin Striker Cast is the lower-priced pick. For a small boat with no console, either Garmin Striker Cast keeps the setup phone-based. For a boat with helm space and 12-volt power, the Garmin echoMAP CHIRP 73sv is the mounted choice that covers both navigation and sonar.
