You're probably wondering why the heck I have so many filters in a small 10g tank... well, I'm actually keeping a 3in Oscar in it... yes... yes... Oscars should be kept in a tank larger than 50g which I do have one... having failed twice in trying to raise a < 3in oscar in my big tank, I've decided to quarantine my 3rd attempt in a small tank before before moving it once it reaches 4-5 inches (which should be in about 2 months) time. So far, the fish has done really well so until then, I've giving him/her the best filtration I could afford. To add to the existing Eheim Ecco Pro 130 and Atlas Internal Filter, I bought a Fluval C3 HOB filter at a discounted price from Pets Lover (Nex).

So far, the filter was simple enough to set up and unlike other HOB filters that I had bought in the past, the Fluval C3 looks professionally built, advance and works silently. 

I bought this filter as a backup to my Eheim Classic 250 (2213) which I got about 2 months ago. Bought from the same shop. Details:http://www.eheim.com/en_GB/products/technology/external-filters/ecco-pro

While doing the unboxing video, I discovered that the intake pipe was missing... annoying but not a big deal but what made it worse was the missing impeller and a motor that was not running!!! This is not what I am expecting for a S$193 product!

I went back to the shop to demand an exchange but it was out of stock. As availability of Eheim is limited in Singapore, I went ahead to get the Eheim Ecco Pro 130. This time, all the accessories were inside with the exception of the additional media basket and Eheim MechPro. Do note that unlike the Classic, there is no spray bar included.

I expected a quicker setup for this filter because of the handle acting as a primer to siphon water from the tank into the filter. Here's a quick guide to setup the Ecco Pro:

Here's a quick guide of how to set it up for the first time:

1) Wash all the parts in tap water especially the filter media which should be rinse 2-3 times.
2) Put back the basket into the canister.
3) Fill up the canister with 50% aquarium water
4) Cut the 12/16mm tubing accordingly (i just cut mine into equal halves)
5) Connect straight intake bar into the inlet (there's an "in" sign)
6) Connect spray bar into the outlet (there's an "out" sign)
7) Close the valve for the outlet. Inlet valve has to be opened
9) Bring down the handle halfway down once and the water will automatically siphon water in the filter!
10) Once the filter is filled with water, open the outlet valve and then turn on the filter... DONE!

The Ecco Pro is well built, silent and easy to setup! However, I think the Classic model is a better deal.
The primer function of the Ecco Pro is a great feature but I can live without it especially if I'm using the double taps. As for the rest of the Ecco Pro, I like the basket and the manual included is sufficiently comprehensive. 
If you don't need the extra features, then go for the Classic. You'll get the same

volume and the double taps for even less money.