Thanks CRStals! I am glad my poker advice is helping you
I don't really get into recommending poker sites anymore because it differs so greatly from person to person according to their goals, and where they live in some cases as well.
I know that CardsChat already has it's own list of recommended poker sites as well, so that might help you decide where to play.
https://www.cardschat.com/poker-site-reviews.php
I do recommend playing multiple sites if possible because that will increase your ability to table select. But if you are on a shorter bankroll, that might not be possible.
I personally prefer regular tables over Zoom because I like to table select a lot which you can't really do in Zoom.
However, there are many clear benefits to playing Zoom as well such as the ability to quickly get into the action and also play a ton of hands quickly.
I have a huge Zoom poker strategy guide on my website for more on this, which also compares the pros and cons of Zoom vs regular tables.
You can find that right here:
https://www.blackrain79.com/2015/07/zoom-poker-strategy-essential-guide.html
I think Stars and Party are still two of the heavyweights of online poker. I don't see either of them dying any time soon.
If anything, I think both of these sites have been taking action lately towards helping to create a better playing environment for recreational players by limiting the table count for example. This keeps the action moving quicker.
I hope this helps answer your questions