I dont know about Parkside but I can tell you plenty about Beezer. Even things I can't say here. I didn't even know Beezer was in NJ. They were not in all the years I lived there.
Beezer is one step up from a KB Home. KB is generally the budget built house. For both builders, they are not really bad but the idea is to NOT buy their options and do upgrades yourself. Of course things that require adding on now because later it would cost more I'm not talking about. What you get is more square footage for your money but what goes inside is really really cheap. You have no choice with the cabinets because they only let you choose from what they offer which is the cheapest junk.
Some of the more expensive Beezer does use a quality cabinet. I should know because I installed a thousand or so kitchens for them in Las Vegas. I feel the customer service is 2nd rate next to a Pulte or Toll Bros. who win the JD Powers award for customer service excellence every year. Beezer never won it.
You may want to get some additional info from a neutral source here:
Consumer Complaints about Beazer Homes