Welcome the CS Stuart, there is a legion on devotees of the Sunbeam 6910 on CS, you will need a decent grinder to go with it, the lowest level grinder probably Sunbeam EM480. The 6910 goes for around the $600 mark if you shop around and the grinder $180ish, but this would be a better option the other two machines you have mentioned. There has been a lot of discussion on the choice "choices" on CS and none has been flattering!!!
Good luck with your decision, Im sure you will heaps more feedback from fellow CSers!!!!!!!!!!!!!