If you want an HOB filter I would check out the Aqueon QuietFlow 30. It's about $20 on Amazon. It doesn't come with much for bio but you can always add ceramic rings or broken up lava rock. I run two of the QuietFlow 20's on my son's 10 gallon tank and they are pretty quiet. If you want a canister that's pretty cheap, I would look at the SunSun 302B or 303B. I have the 303B on my 29 gallon tank and if you use the spraybar then the flow is not bad. The SunSun 302B and 303B are around $55-$75 on Amazon, depending on which one you get. My 303B holds a huge amount of bio media, probably good for a tank up to 55 gallons easy. Also, the SunSun 300 series filters have a UV built in, which really helps to clear up water to crystal clear.
Not sure if this is an option as I don't have experience with the Accent's filter, but could you possibly add a better pump to the filter to get more flow?