I just got a Nokia Lumia 2520. I've never had any Apple tablet. I have had Acer Iconia A200, Nexus 7 (1st gen), and Dell Venue 8 Pro. (All past tense - the Nokia Lumia 2520 is currently my only tablet.)
160 Euros sounds too much. I paid $125 USD for a used one. The certainty is it will not see Windows 10. RT will remain an evolutionary backwater. There may be some hope for an expanded App store when Win 10 Mo becomes official. Just a gut feeling. Arm CPU and all that.
The screen is very nice. Crisp and bright. It seems plenty fast. SIM support is definitely a plus. Office good. Internal storage at 32 GB is fine by me.
I think it comes down to what you are going to expect from it. Productivity - yes. Web browsing - yes. Consume media - yes. Some time waster games- yes. Lots and Lots of Apps - no. Cool new things coming available - no is probably the truth; however Microsoft have pledged something is coming to RT for Surface... Will other RT tablets be invited to what Surface gets? No one seems to know definitively and only time will tell.
160 Euro is probably too much even for New in Box... It's a nice device. I like mine a lot so far, but I would not have paid much more for one at this point. It's a gamble.
P.S.: Accessories for it seem to be drying up as well... Don't forget you will need some things. A screen protector as the glass is a horrible fingerprint magnet. A dongle to convert microUSB 3.0 to full size. A folio case is always smart so you have a stand. A Bluetooth keyboard if you really want to be productive. These things add up. Consider them in the overall price you want to risk.