Is the cheepest vacuum brewer
Which in my opinion give the best coffee of all other method
Give a very flavorfull coffee with little to none coffee grind in your cup.

The Flat bottom can leave a significan amount of water in the bottom container. Especialy if you only make coffee for one persone.
The instruction that came with the bodum are NOT clear at all.
Longer to clean than filter paper methode.
Need a stand to hold the upper part while the water is heating

Well that my only vacuum brewer and for one thing vacuum brewing beat everything else.

I usualy don't have any problem with clogging or grind that pass throught the filter. But I still replace the filter by a cory glass filter.  I got the glass filter rod for 2.99$ on ebay. Does it give a better coffee? I want to believe so but I probably disillution myself.

For the actual brewing the instruction are useless the first coffee I made was tastless. You need to preheat the water before putting the top glass part. You need to wait till you see water vapor comming out of the bottom part. When the top glass is put on, the water need to go up at a fair rate. Someting like 1cm/sec. If not that mean that the water is not hot enough. With the glass rod, not hot enough water result a lot of grind going trought the filter when you remove the heat.

I find that using a fondu with their spirit flame give a good coffee. I preheat the water on the stove and transfer it to the spirit flame. I find the stove too hot giving less flavor to the coffee. The spirit flame give just enought heat for the brewing process but not enough for the heating process.

When the coffee has finish his trip north I give a good swirl with a wooden spoon. I have to be carefull not to tought the glass rod otherwize I end up with a lot of grind going south. Wait about 1 minute and remove the heat.

I use a very find grind made with my BrAun burr grinder and don't have problem with grind passing trough the filter. Almost none unless I screw up somewhere like touching the glass filter or not put enough heat or not long enough then there is a lot of grind that goes down I have to pass the coffee through my melita cone filter to get rid of the coffee grind. I didn't have clutter problem it was sometime slow but never actualy stop and clutter.

For the cleaning you need to clean it often I clean it every time I use it with dishwashing soap. I use a sponge and a stick to scrub the inside. For the first month I didn't clean the inside of the bottom glass and it start to give me a sour coffee. Now I clean it every time.

The unit need a stand to hold the upper part while the water is heating. I'm using a stainless thermos that I no longer use as stand. the openning fit well with the rubber. And because it's in stainless steel, it look very good. But that an extra that is not include and you need it because you cannot just let the top part lay on the side while the water is heating. You can hold it in your hand but that sometime inconvinient.

I bought it at la Soupiere a local kitchen utensil store.