repair and spares are issue with other brands than landi renzo .....
so i suggest go for landi renzo ....
but, my personal experience, i had margalla with TerTereni (spell not sure) ...... it gave me superb pick, way better then anyother margalla with landi renzo setup and milleage was like on motorway without ac 210 km with 55wl cylinder ......
in city is like 120 of 300 rs cng abt 6 months back ...... only prob i had is finding its spare, like filters, pressure valve, otherwise it way better in performance then landi renzo
Regards