I’ve had a pair since they first came out back in October 2012 after trading in my CDJ 900s for them. They have been fantastic pieces of kit. They do everything my 900s did but with the added bonus of stuff like hot cues, jog tension adjust, separate start/stop time adjust, pitch bend etc.
They have also been more reliable than my 900s, having needed no replacement buttons etc in the 2.5 years of use. The build quality is second to none, the entire unit encased in thick durable plastic that doesn’t seem to scratch. Though the downside of this is they are over a kilo heavier than CDJs.
The jog wheel is excellent, it is mounted on a central spindle rather than the ‘floating’ jog mounted on plastic bearings that you get in the Pioneers. This means it is completely quiet, and buttery smooth at any tension setting, and also removes one of the failure points (the plastic bearings).
The only downside really is the screen. This wasn’t an issue when new as it was comparable to any of the Pioneer offerings apart from the CDJ2000. But with players like the XDJ-1000 now offering decent res full colour displays the 2900 screen does now look a little dated.
Also there is no HID support for Traktor (this was one of the first players to come out after NI seemed to pull the plug on offering HID). That said, for mobile gigs I use mine exclusively with Traktor in standard midi mode and it works absolutely fine. Yes there is no on-screen feedback (there are mappings out there to get track name / time elapsed etc onto it) but then with the low res screen it is not something that bothers me anyway. The feedback with Traktor is excellent, everything is mapped as you’d expect (hot cues / slip mode / looping / transport controls etc) and the jog response is excellent. I have no complaints whatsoever with it’s Traktor compatibility.
I believe it does have out-of-the-box display support in Serato though.
So yeah they are incredibly solid players, and the cheapest way to get media players that support all formats, network linking, quantized loops/cues (for Engine analysed tracks), slip mode, hot cues, jog tension adjust etc in a package with professional grade build quality.
However, I would argue that solely for Traktor use you would still probably be better looking elsewhere. Yes they do work extremely well with Traktor, but so will a decent controller that costs significantly less. Their biggest strength in my opinion is as a pair of standalone players, networked linked to a laptop/notebook/iPad running Engine software for track browsing. In this regard they offer a CDJ2000 experience minus the colour screen and needle search.
But that said, the price on these has come down loads in Europe since Denon were acquired by inMusic (they are half the cost of even the xdj1000/CDJ850) so if you find a good price on them then you can’t really go wrong.