Otamatone Deluxe White

The quality of the instrument is disappointing to say the least. There are also some practical issues.
The nut of the line-out jack fell off as soon as I pulled the instrument from it's box, screwing it back on resulted in it falling off again.
The springs of the mouth make an annoying squeaking noise as you squeeze the sides. This is loud enough that it prevents recording through a microphone.
The sound quality coming from the speaker also isn't good but depending on your expectations, it might be acceptable.
The strap rings occasionally resonate at certain pitches with the instrument and rattle, you have to move them around each time to stop the rattling or tape them.
The line-out signal, is regulated by the volume knob and, even at full volume, it is very weak. It needs a lot of gain, enough so that the noise floor increase is rendering it useless. Also, using the line-out does not mute the speaker, so in order to use the line-out you have to also hear the speaker at full volume.
Overall this is an interesting toy, but is under no circumstances worth the price. The smaller one is likely a better deal.