Hi there,stay well clear of the 600 it uses the alf 502 engines which are underpowered & a problem engine.
They are used on early 146,s.The only good thing about the 600 is that it has the same cabin as the 601 & its a lot cheaper to buy.
Avionics will be the old steamdriven anologue type, against the partial efis on most of the 601,s out there.
Go for the later 601-3 if you can ,it will have the tail tank as standard.Most 601-1a,s will not have a tail tank except a few that have had it fitted as an option/mod.
You should easily be able to fly to bangor from Ireland in a 601 with a tail tank.
Also make sure aircraft you buy is on smart parts & engines are on JSSI Program.
Lastly employ a good engineer to look afer it for you.
