My first pick would be the Viva.Unit#d Mot#rs is the agent here.Had owned a kelisa earlier,actually my mothers,which was one in the first batch to arrive in Sri Lanka,it turned out to be reliable as Japaneese,infact its Japaneese parts used,but assembled in Malaysia...For me the obvious pick would be the Viva even if a Demio or a Vitz was in the list...and about the spares there is ample availabel with the agents,we didnt have any problem with Unit#d Mot#rs...I highly recommended it to a friend of mine,he got it last month and he is very happy with the vehicle.Despite the fact of ground clearence everythinb else is in the favour of the Viva...I dont know about the k10 regarding this issue but the alto 800cc had a problem in controlling where the speed exceeded 80km/h.There are a few Viva owners on the forum,hope they could shed some light.What I have to say is for me nothing is better than the Viva (compared to the cars in that range).Good Luck