I'm looking to upgrade my circular saw from an older corded Ryobi that I've had for more than six years. I have a few specific requirements: I want a 7 1/4" blade, it needs to have the blade on the right side, and I'm aiming for something that's as powerful as possible. I want to make a solid purchase that won't leave me wanting more power just a year down the line. I'm particularly confused about the battery options, especially with all the FlexVolt stuff. I have plenty of 5AH XR batteries available, but I'm willing to buy a new battery if needed. Is the DCS573B the best choice for my needs? I could really use some guidance on sorting through all these options!
5 Answers
If you're looking for power, the DCS578 might be your best bet—it's potentially the strongest circular saw available right now, even compared to corded models! Just be aware you'll need FlexVolt batteries for it, and I recommend the 9AH ones since the smaller 6AH won't deliver the full power. If you'd like to stick with DeWalt's 20V options, the DCS573 is solid but not as powerful as the FlexVolt options. It can definitely handle most tasks, though!
That's a great point! If you're mainly doing casual projects like cutting 2x4s or OSB, the 20V should work fine. But for tougher hardwoods or long sessions of use, the FlexVolt really shines.
Hey, I found a comparison chart that might help! It covers the 20V models (DCS590, DCS574, DCS573) versus the FlexVolt DCS578. Check it out at Pro Tools Review. You'll see some interesting differences; for example, the DCS590 is actually heavier compared to the DCS578 when both are bare.
I run the DCS573 daily, and it's a beast despite it being on the lower end of the power spectrum. It handles a wide range of tasks really well. If I were buying new, I'd still stick with the 20V since I already have the batteries, but the 578 is an awesome option too. Just remember, no matter what, those FlexVolt batteries will give you a performance edge!
Murdochs has the DCS578 on sale right now, with a solid kit option for about 25% off if you're interested!
The DCS578 is a solid choice—I'm using it with a 9AH 60V battery and it's incredible! It will drain a 6AH battery pretty quickly, but it gets the job done. I’ve ripped down some hefty timber and still had juice left for other cuts. Just make sure the right-hand blade fits your comfort—some prefer that!
If you're cutting standard lumber most of the time, the DCS573 will be fine for your needs. But yeah, if you plan on doing anything more demanding, you'd be better off with the DCS578 and its superior power, just keep in mind you'll need those bigger FlexVolt batteries!
So, if I pick the DCS573, I still need to grab 20V FlexVolt batteries, right? Can I use my current ones for it? Not a big deal either way, just trying to figure out how to plan my purchases!

Good breakdown! The 20V saw is definitely suitable for homeowners dealing with smaller projects. A good, sharp blade can really elevate its performance. But if you're also investing in 60V tools, then going for the 60V saw might be worth it since they're on sale sometimes for a price close to the 20V ones.