Hi. I'm working with makerbot printers for about 4 years and i can't say that they are the best printers on the market but they are doing the job well, and almost all of the prints are perfect. i can complain about the price and the quality (only 0.1, close source....) but its not the topic. i decided to bought an ultimaker 2 about a year ago because of the quality, upgradability, open source, great look and a hole lot of recommendations. till i bought it i have a lot of problems like under extrusion (tried everything to fix it, maybe its layer skipping (bad bearing)...not sure), material grinding, rough surface and more....
half year later, you announced the um2+ that solved all these problems but i decided to wait till the um3.
i'm and a lot of others bought the um2 because you promised dual extrusion! i really wanna upgrade my printer, and i think that most of the people, will agree to pay around 500-1000$ for a upgrade kit which will solve all the problems(including the annoying fan) and will add dual extrusion, instead of selling they um2 and buying the um3 which will cost more.
the whole ultimaker's community is waiting for that till the um2 announcement and you promised! a lot of times...... so pleas.... work a bit.... i will buy it and im sure that a lot of others will, so do it! im not the only that asked but that's why ultimaker is special, and the first in half of the top 10!!! so dont disappoint us!!! please!!!