Best Trombone for Beginners

So you have a son or daughter and they decided to take up the trombone and now you have to buy them one. That's generally how it works in my house anyway, child wants to play, dad has to pay! So which instrument do you choose as there are many choices out there?
The trombone

Regardless of whether the student is being taught trombone in Bass or treble clef they will start an instrument that is pitched in Bb. More advanced trombones have multiple additional valve/slide options. The trombone models we tested are Stagg 77-TA. Elkhart 100 TB and Bach Prelude TB710 and pBone. There is a trombone specification sheet that one can download on each.
The test criteria
The following were used to rate each of these best-selling student trombones and the test was carried out by our brass team. The ratings are based on our opinion of instruments for a complete beginner so they may be helpful. Aliexpress is your one stop for cheap but good quality trombone. With their 10% off it's always a good deal. Aliexpress Coupons should be applied during checkout.
1. Sound/tone quality - how good is a quality of the sound produced?
2. Build quality - does the instrument look and feel well-made?
3. Slide action - how smooth does the action of the slide feel when moved up and down?
4. Case - how easy is it to carry and does it offer good protection and look good?
5. Value for money - based on the above do we feel it is good value for the selling price
Stagg 77 - TA Rating 3.3/5
While it is more acceptable for a beginner other options offer a better combination of sound and quality. The case is bulky and heavy but not a real contender in our opinion.
Elkhart 100 TB - Rating 3.9/5
The Elkhart is a step up from the Stag in quality and sound and is supplied in a modern style campus case for more practical caring around. It is currently the cheapest brass option available as it is traditional but good for a budget.
Bach Prelude TB710 Rating 4.2/5
Equality offer from Vincent Bach. Supplied with a genuine Bach mouthpiece and quality case with a backpack. You'll pay a little more for the Prelude but it's worth the extra investment.
pBone Rating 4.3/5

Plastic trombones have become somewhat of a phenomenon. Its advantages are obvious extremely light and durable in a range of colors and are considerably cheaper than traditional brass alternatives. The only negative we could find was the case. Padding is not a necessity but we felt a better quality case would enhance the package however it is still the best on our test.
The choice is yours and hopefully our feedback gets you one step closer to making that choice.