hi.. i have 110 Flash, but also ride the new eco of my friend which was only 352 kilometers covered at that time..
so, as i feel and observed tht it was light weight as CD70 (honda) but it was powerfull and speedy.
i noticed tht it covered only 352klm, but i tried to drive it fast ( even it was in its running) but it touched 90klmtr easily and the speed was increasing but i had to apply brakes due to aproaching at rushy chowk..so i think it is good bike..
on the other hand here i just give u some simple but valueable advices..
1: always tune ur bike from its company showroom or a well experience mechanic (of the spasific brand which u r using)
2: if u want good fuel consumtion, just try to drive below 60km/h
3: keep maintain enough air pressure in tyres recomended by company.
4: tune after every 1000 1200 kmltrs.
5: but u must change the oil at 950kmtre or 1000kmtrs..(daer se oil change karny ka koi mazaq nai,)
6: last thing tht ECO is not build for racing, not only ECO but every Suzuki bike (spacially here in Pakistan) they are reiable and they are for a mature person. agar race lagani hai tu phir fuel he ziyada le gi..