My marcotted rambutan was planted at the same time as the grafted one but has grown more slowly,needs support and suffers more in dry spells.My marcotted durian,longkong and ross sapote have also shown less vigour and are more prone to environmental stresses than their grafted counterparts.Locally many trees are now marcotted and often pruned short or espaliered and those that were not copped a flogging in recent cyclones.While marcotted trees seem to start producing as early grafted trees yield do not increase as quickly thereafter.A friend noticed this was the case with abius in particular.
I think seedling trees have many advantages in terms of hardiness,longevity and health.The drawbacks of a longer juvenile period and not being true to type I think are often overstated.I have seen numerous examples of seedling trees producing faster than published advice indicates and having fruit quality and yields that are very good.This includes avos,poly mangoes,annonas,abius,durians,artocarpus and many others.I would be interested o hear other peoples experiences where seedlings met or exceeded expectations.