Re: spare anchor
A lot of us use bruce equals here in puget sound frankly. Including myself with very good success. I have a 7.5KG lewmar version for my Jeanneau that is about on par with an H28.5 that a friend has near me.
Depending upon the real usage, I could see a 10KG/22 lb one for a stern, light lunch/low wind hook as an option. Some would go/recomend a danforth of some sort, as they work better in mud/fine soil bottoms. Be it a galvinized or say a foretress out of aluminum. The fortress will weigh about half for a given size anchor, but also cost you about double!
I just bought a 9lb Delta as my race anchor. Worked well the other day in some 7-12 knot winds with 12-15" waves in south edmonds.
Reality is, there is not a better or best, only what will actually work bet for you, depending upon the cnditions you need said 2nd anchor to work in.
She drives me boat,
I drives me dinghy!