No one but you can make the 2.5x extra cost justification, for you. "Is it really worth it?" Perhaps so, or not. It's all in the estimation of the beholder and the beholder's pocket book. The point of diminishing returns, for binoculars, does set in pretty firmly at the Conquest HD level.
I've used a pair of Conquest HD 8x32 and 10x42 for going on eight years. This year, just for interest sake, I decided to check out the Victory SFs. Today I also have 8x32, 10x32, and 10x42 SF. While I do prefer using the SFs over the Conquest HDs, that doesn't make the Conquest HDs any less wonderful than I have "enjoyed them to be" for the last eight years - they are just as great as day one, for me. I didn't "need" the SFs, but I didn't mind spending the money for them either.
I have worked as a commercial photographer for decades, my eyesight is quite good, and I don't wear glasses with binoculars. Excellent visual image quality is something I have enjoyed for a lifetime and is quite important to me. The biggest difference that I find between Conquest HD and SF is that I see a noticeable difference in clarity and sharpness with the SFs. And, I like the color quality slightly more with the SF. But there isn't a dramatic difference, by any means, between them. Conquest HDs are quite sharp, crisp, and mechanically, the Conquest HDs are built!!!
Form factor - the Conquest HDs feel beefy, more "stocky" and are a bit shorter. The SFs give a bit leaner impression. They are longer, and have a rearward/eyepiece balance emphasis, which makes them feel quite light weight. They both have quick, light, and very smooth focusers - pretty much as good as focusers get: awesome.
As to whether 8x32 SF is "worth" the extra cost over 8x32 Conquest HD... that's all about the individual's pocket book, really. Either choice is an excellent choice and will serve quite wonderfully. If you don't mind spending the extra money, I think you'll find there is a bit of an edge up with the SFs. On the other hand, Conquest HD saves a good bit of money and performs exceptionally well.
To step up from Conquest HD to SF is really more a matter of want, than a matter of need.
My trio of 8x32s
Obvious to many here, I have mentioned my 8x32 UVHD+ bins numerous times before.
They have sharpness, clarity and color quality surpassing anything else that I've experienced. But that's for a different thread.