Not quite as tall as you and slightly less in weight, but I found the hornet a good rifle to shoot. Tried one yesterday so it is quite fresh in my mind. The loading was easy to use after a few false starts and quiet.
The owner did notice a slight change of POI with and without the silencer. Likme you I can not keep the S200 still but the S400 has a good balance and a club member yesterday was hitting a 40mm target with regularity @50yds in a strongish wind.
The only other would be the Daystates but IIRC they start at near to or over your price range.
infensus procul vox locus procul nefas vicis
I aimed at the right place at the wrong time.