Hi Zhenya. I would second Sorcha's recommendation. I have a Peterson that I obtained from Elderly. It is a bit pricey, but when I think of all the others I have bought for less, that broke and were thrown away, it isn't bad. It works very well and I carry it in a daypack with my music books and accessories. I would say that I am completely satisfied. About the only beef I have is that you have to retighten the halves of the top occasionally, but that is a small price to pay.

All the best,

Mick