PZ are quite a lot better than the dynam planes and you will see that in the cost of the planes,
i've only seen a couple of Dynam planes and to be honest that was enough for me and i won't be buying any soon,each to there own i suppose,i have most of the PZ warbird range and i find the PnP is best for me,the parts seem to be easy to find for PZ and again as far as Dynam go i can't say as i won't buy one sorry.
As i've said above i have most of the PZ warbird range and i'm happy with them but there prices are a bit to high,if you shop around you can find the same planes and maybe even get more for your money,well thats what i did as it was getting to pricey for me to keep buying most of the warbirds that PZ was bringing out,so i went over to Durafly from Hobbyking as they have some great warbirds,plus you get retracts,flaps,lights and so on with most of the Durafly range in with the price so you don't have to add them later like the PZ warbirds,i've got quite a few now and i'd say they are better than PZ,but don't just take my word for it as i'll leave a link to one of the Durafly planes and if you look down to the tabs which say Discussion,Reviews,Video and files,look in the reviews tab and go read a couple of them,as they are people who have brought the Durafly planes like me and see what they say about this plane.
Don't get me wrong as i'm not bashing PZ because like i say i have a good few of there planes,i just like how i can pay a little less for the Durafly warbirds and get more for my money like the retracts and so on.
Well hope this has been of some help to you and no matter which plane you buy and who from,just make sure you fly safe and have fun but if this is your first plane you might want to go for a trainer plane,something with a high wing or a good 3ch plane or an easy 4ch plane,plus a good RC flight sim is the way to go first too but i'm sure you know all this.
http://www.hobbyking.com/hobbyking/s...00mm_PNF_.html
http://www.hobbyking.com/hobbyking/s...r_Trainer.html