I have a Whispers, Penguins and Aquaclears and they all have their strengths and weaknesses.
I recently just bought a new Penguin, 350B and the build quality looks much better than that of the Whisper and Aquaclear filters. The casing is also more rigid and less likely to crack like on the Aquaclears.
I must just be lucky because all my filters have been working well for over 5 years, but some do tend to get noisy.
My Whispers have been silent and the filter media is the cheapest to replace of the 3 brands I mentioned. I usually change the filter media every other water change or once a month, while only rinsing the black sponge in old tank water to maintain the beneficial bacteria. The pumps seem a little weak for what they're rated.
The new Penguins are built very solid and the 350B has enough slots for 4 filter cartridges. My older Mini has been silent for over 3 years, but my 330 is making some ridiculous chatter from the impeller region. I got this used from a friend so I dont know how old it is and I haven't had a chance to buy a new impeller. The filter media is a bit more expensive to replace compared to the Whisper and has less floss material per cartridge. The flow adjustment is also not very precise. I like Whispers and Aquaclears much better.
The Aquaclears are very versatile. You can add what ever media you like in the basket. Comparing similar models to other brands, the Aquaclears hold more volume. If you run carbon, that's probably the only thing you'll need to replace as the foam block is easily rinseable/resuseable.
It's pretty much a hit or miss with any filter. Sometimes when I restart the Aquaclear, I need to tap the impeller a bit to get it started. Again, maybe I just need a new impeller.
I would just pull out the impeller, not the pump, from your filter and try cleaning it. If it doesn't start, you could also try tapping the pump or imipeller to give it a kick start.
HTH