I've used chippers at both ends of the scale, from the large industrial ones that are towed behind a truck, to the smaller electric ones for the average garden.
Both can be problematic if you push them to their limits, waxy branches like holly can be difficult, as they slip away from the chipping blades, as can branches with thick lateral sub branches that come off at right angles.
After spending a lot at time unblocking the blades (power off of course), I've learnt to be very choosey about what I feed into the hopper!.
Probably one of the larger petrol driven, garden types would suit your needs.
what ever you deside.....Good luck Chip.