Wise Old Owl
1700BT and R1850DB are actually pretty much the same speakers, difference being that 1850 comes with inbuilt DAC and hence supports digital inputs. So sound quality is not likely to be very different.Cool Buddy has already shared names of decent bookshelf speakers. Any reason you are not considering those?
I am myself using Edifier R1700BT bought for 10.5K and before this I was using Logitech Z623. I don't miss the over powering bass from Z623 at all. Not saying that it has BIG bass but it has enough. The sound in songs and movies is good. So am hoping higher end models will be even better than this.