Please give me advice about handy but not too costly stroller. The old stroller is too big and heavy for me and hard to assembly!

If you are not picky on brands, you can get this stroller from qoo10. It is a replica of Yoyo stroller. It is compact and light with various designs. http://list.qoo10.sg/item/BEST-SELLER-ICHIGOBABY-LIGHTWEIGHT/423393708?stcode=77