Yea, the 4000 model seems decent. Did a bit of research on the internet and checked the video on DREMEL's website. Quite nice item to have. Can get it for $170 Aus.
Then it is that kit item that has the machine plus the bits and pieces extra.

buy one... never look back, great for niggly rust repair clean outs and stuff

used a cheaper model a while back, recently was given a super dooper one with digital speed control and stuff, seems awesome but still waiting for a good job to use it on lol

even the cheaper one was great, only issue is they can chew through the bits and they arnt cheap, so if a small angle grinder or air tool can do the job its better to use that

the flexible extension drive seems like it will be worthwhile, but again waiting for an excuse to use it

Hi all
Anyone have experience. They are a bit pricey but I am looking at one because of it's application to small detailed jobs.

I am looking at the 4000 range which seems to be in the upper region of their product range.
Any suggestions/advice appreciated