B60 filters can be pricey especially for the better brands such as Heliopan. I have found the quality of the Hasselblad filters worth the price.
I prefer and have the lenses of the following focal lengths: 38mm [SWC], 50mm, 80mm, 150mm and 250mm. I tried and did not buy the 60mm since I felt that I was too close to the 80mm. Another lens set that I like is the 38mm [SWC], 50mm, 100mm, 150mm and 250mm.
I shopped around and found stronger Hasselblad straps than the ones the OP tensions.