The Merlins, Tylers and Ellis are the standouts on your list in no particular order, IMO. I would also add the Tyler Taylo Reference Monitors for nearfield listening that only needs to go down to 50 hz (as they go down to about 46, and cost about half of the Linbrooks). The Taylos I prefer slightly to the 1801Bs for about the same price.
All three (or 4 if you include the Taylos) will get the job done. Probably the Merins and Linbrooks are the best of the lot, but the Ellis and Taylos cost about half as much for about 90-95% of the others' performance. It will pretty much come down to your own sound and music preferences, electronics used, and how much of a value seeker you are.
Good luck,
---Dave