I don't have any of the foamy SE5's, but be aware, if you haven't noticed already, the HobbyKing one is modeled after an actual replica. They were even faithful to the replica by giving it an inappropriate engine. If that doesn't bother you, it may be a good deal.
If you care about proper scale engines, just be aware you'll want to change that, and that will add to the time it takes to get it where you want.
I have a Lanier RC SE5a. It's wonderful, about the same size as the Parkzone one. Built up balsa. Great Planes bought out Lanier, so you have to find one on the classified ads. Liked it enough to buy a spare!
I have and fly my Electrifly SE5a and a Parkzone SE5a , and they are great biplanes .
If you want a bind and fly SE5a , get the Parkzone at $249 dollars , or a plug and play at $185 dollars .
Or if you like wood and monokote type construction , get the ARF Electrifly SE5a .
If I had to choose one , it would be the Parkzone SE5a .
Spare parts are available here , IN THE USA , for both planes , delivered in about 2 or 3 days time .
A friend brought the Durafly SE5 down to our field last week. I was very impressed with the detail, it nearly outdid my highly modified electrifly camel! Beaut moulding, especially on the guns and it flew fantastic too, all stock. A real floater, quite stable but very aerobatic too.
We flew formation all afternoon and although I never considered an EPO WWI before, I am now.
Dynam Spitfire, Dynam P-51, Electrafly Camel, scratchbuilt foamboard F-15 and full fuse Spad XIII, paper airplanes, rubber bands, anything I can fly.