This Ryobi saw really impressed me. At around 7 amps I felt it would be underpowered but it has handled every job I have thrown at it. Its light and the variable speed dial works awesome. The only downside to the saw is the tool less blade change lever. After tons of blade changes it wears out and I have had to tear mine off the saw and use pliers to actuate the lever. Ryobi would have been wise to cover the inside of the plastic lever with steel like Dewalt does with their 18v recip saws. For the occasional user this saw is superb and I do recommend it.
Since this saw draws electric power, it's quite powerful, and suitable for most reciprocating saw purposes. At the price, you can't beat it! I needed a quick, cheap saw when I was having trouble with the batteries in my other one. I ran to the store, and just needed something basic- this was only $40 new, and it got the job done. The only catch is that you MUST already have blades at home (like I did), or buy some at the store. The included blades are ridiculously flimsy, and I bent both of them beyond repair within minutes! Other than that, no complaints for quick saw jobs. If you're going to use your saw constantly, invest in something a bit heavier duty and pricier. If you just need to make a couple of cuts here and there, this is ideal.