Hi Folks.
My sister in law as a part time gig gives music lessons to kids. Not her main trade, but she is good at it. Sometimes she would travel (in a car) to friends and they would jam.... She asked me to help her to find the right travel keyboard for her needs, but there are so much choices, that my head spins and she has a specific set of features / pre-requisites that it must have.
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1)Good acoustic piano sound
2) Has to be portable enough for her to carry and of course built in speakers.
3)Weighted keys. Not full weight of course, but something not very "plasticky"
4) Should be able to play styles (has to have at least a good GM soundest onboard for that)... Style expansion in the future.... Nothing fancy, just some average styles in Bossa Nova / Jazz /Pop.
5) Not expensive $200-$400 or close to that. Could be (and most probably should be) pre-owned.
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Could be any brand. I guess something from 2005-2019 year range.

If it was me I would take three components: A weighted controlled+tablet/ipad+portable speaker(s). She wants it all in the same package...
Any recommendations? Again a pre-owned unit is totally fine.

I thank you in advance.

Misha.