The Velodyne DD12+ is very expensive for the performance you get, but the dealers I've talked to (including the one I bought my DD18+ from) say the Velodyne DD+ series has been very reliable. I'm not familiar with the market in Denmark, but in the USA the resale values for Velodynes are very high. Though I bought my DD18+ in 2010, I could sell it now for 90% of what I paid for it, which is extraordinary (and completely illogical). The JL's are also good, but similarly high-priced. If these are your only two choices, I'd recommend the Velodyne. If there are Internet Direct manufacturers that ship to Denmark, like SVS, I'd look at those too.