PIVX is to gather people's own resources, energy and ideals. I heard that PIVX's project team includes talented programmers, professional project administrators, some of them are novice of encryption technology, and some of them are long-term users of encrypted currencies since the advent of bitcoin.
What is PIVX strength compared to such like Monero?
Both are good projects. Privacy-wise, I'd say they're comparable. XMR uses ring signatures whereas PIVX uses Zerocoin protocol. One big difference is that PIVX is PoS whereas XMR is PoW. Philosophically, PIVX tries for more utility as an actual currency (fast block times, fast tx speed and confirmation, and low fees), whereas XMR is more focussed on security 'at all costs'. Some other strengths of PIVX include its use of a 'see-saw' mechanism to dynamically adjust rewards between masternoders and stakers, fair community governance, and the fact that fees on the network are burned (i.e., as transactions on the network increase, the total supply will remain relatively flat and could even decrease if zPiv transactions, which are more expensive, become very common). The PIVX community is also very strong (mostly on Discord, but to a lesser extent on Reddit as well).
You can see a full comparison here: https://pivx.org/how-pivx-stacks-up-in-the-privacy-realm/
I'd also suggest checking out PIVX's current roadmap to see what other plans are in development/planning: https://pivx.org/what-is-pivx/roadmap/
