For that price, only the 280x (last one) and you're taking risks. The 270x's and 7870 aren't worth more than 120-130€ for mining
If you can get the 280x card soon you should be ok. I just did a calculation on CoinWarz using 720kHash at 350 watts draw (included MB and CPU) with $0.12 Watt/hr power cost and it shows the following daily profits of various scrypt coins:
LTC - $6.12 ~50 day payback
WDC - $8.27 ~ 37 day payback
MEC - $8.31 ~ 36 day payback
Paybacks were based on $300 a card (common in the US), you will need to convert using what you can buy it for of course.
You will obviously need to do your own calculations on the profitability with your own figures, and account for falling prices, but there is still a pretty good opportunity.
I agree the other cards are not worth considering at this point.