Whilst Rob is absolutely entitled to his opinion, I could not agree with him on this. The BCM705 is an excellent mic and should be considered in the same league as the SM7B and the MD441.
We have all three of those mics here, including a pair of 441s and a pair of 705s and on some sources I prefer the 705s,. They have a crisp definition that the SM7B lacks, but don't have the silkiness in the upper reaches that is the tell-tale characteristic of the 441. On strident sources the SM7B can work well, taking off some of the bite while capturing the body. On airy open sources, the 441 can shine, smoothing high end detail. On full-bodied resonant voices, the 705 has a pristine quality and does its thing superbly in the mids, while capturing a broad spectrum and sitting very well into a mix.
Among dynamic mics, I certainly think highly of the 441, but there are some sources where I find the 705 works better. If you can, you'd be well served to try them yourself to see what works for you.