Personally and having done this job myself, I would say get quality bushes and keep your OEM arms. Also, the 3x console bolts can often be difficult to remove (A stretch bolt binding in the alloy subframe is not nice). You can get a console bush puller on eBay for less than £30. May as well do front bushes at the same time (they can be difficult to get out and in). I've got PSB bushes for the front and genuine Audi TT for the rear console bushes.
Good luck
Stu