What other 90mm lenses have you used, I wonder? Reason I ask - there are so many lenses out there in 90mm range (80-105) that are better IMO than CV 90. I did have it a while back, and while it's sharp - it was not my favorite lens at all.
As far as what else can one get for under $650 in 35mm and 90mm range - lots of things - Ultron 35/1.7 and Canon 100/3.5 or Canon 100/2, or CV 35/2.5 and Jupiter-9 or to go really cheap - both russian 35/2.8 (Biogon copy) and J-9 would be under $200 and both can deliver great results if you get a good one.
To OP - nice shots, but I'm not too crazy about bokeh in the first shot - too swirly for me! Can you post photo of the lenses you used?