There are other features which give you convenience. A juicer that has a large feeding tube, for instance, means you can put in large chunks, enabling you to skip the tedious chore of chopping your produce into small pieces. A large disposal spout is also a good feature as large spouts do not easily get clogged up and have the added advantage of producing a higher volume of juice.
The best juicers extract as much liquid as possible from fruits and vegetables, leaving behind very little pulp. Machines that leave large amounts of very moist pulp just aren’t doing their job. The same is true for froth. Every juicer makes some froth, but you don't want inches of bubbles – you want a machine that gives you the most juice for your money.
Centrifugal juicers are also not as efficient as masticating juicers in terms of generating yield. The pulp that comes out of centrifugal juicers is still relatively wet which means that less of the juice is extracted. You cannot count on centrifugal juicers to extract high yields of juice from high-fiber leafy greens like wheat-grass, spinach, and lettuce.

Juicing is a unique way to naturally process your fruits and vegetables to maximize the nutrition you get from your foods. By chopping, crushing, and squeezing fruits and vegetables, you are helping to release all the micronutrients found within the cell walls [1] These micronutrients are very beneficial to your health and can benefit nearly every aspect of your health. Simply put, Juicing is good for you! One of the most effective means to ensure you are getting the most of these powerful enzymes and micronutrients is to juice with a high-quality juicer made just for juicing! Research has shown that using juicers, rather than blenders, is a much more effective way to release natural anti-oxidants found in fruits [2].
In our tests, the Tribest Slowstar consistently outperformed its competitors, delivering high yields of delicious juices from a variety of fruits and vegetables with minimal effort. Compared with other juicers we tested, the Slowstar is quieter and less likely to jam, and it generates less foam. With an impressive 10-year warranty on the motor and parts, we think it’s a worthwhile investment for people who juice regularly.
Celery will juice just fine, but for greens I use one of those slow juicers, the vertical version. The celery, raspberry, strawberry and things like kiwi come out better on slow juicers. It appears that “one size fits all” idea is only good for T-shirts, so considering one can get slow masticating juicers for much less then they used to cost there is no reason not to have one as well, so you can make nectar out of spinach and celery – it does taste weird but it is quite nutrition.
This juicer is worth it's value. That said I note that since it is a sintrifical force juicer it seems to make much more frof then other slow grind type juicers and the remining pulp is still wet, so not all of the juice was removed ( or more could have been removed). I do like the eaz of break-Down and and reassemble and it is easy to clean. It is small enough for the counter or storage area. If you are starting out and looking to explore the world of juicing - start right here. Enjoy!! 
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