i was the same, when chiselling etc you need to put a lot of pressure on before it starts to vibrate.I've used the brushless makita SDS for around 2 years now Lee. I have to admit when I first used it I didn't like it as I didn't feel it had as much initial control as my previous one (Hitachi). However, that was just me getting used to it and I like it now, it seems more powerful than the Hitachi.
I can't help you with the replica batteries though. I feel if I am going to spend the money on such a good quality drill then I may as well put the right batteries in it! :smile5:
and to the guys that had the genuine batteries die within a year, the first gen makita batteries had a design floor and this was fixed years ago.
only the old non start bl1830 will be affected. the 4/5ah batteries are all not affected at all.