I really don't know much about either plane, but I can tell you... go big and best-first! I have wasted thousands only to end up with a lot of planes I used for a short time. I have a Fiberclassics 2.6M Extra with a DA-100. If I saved all the money I wasted on smaller planes I could have 3 FC Extras! Just a little advice from a guy who wasted a lot of time and money to get where I am today (airplane wise).

Examples: YS 140DZ=$709.00 vs. DA 50 w/ muffler=$620.00
Golberg Sukhoi ARF= $319.00 vs. GP Wagstaff Extra=$399.00

Both airplanes can use the same radio setup and I have seen the GP Extra do very well in Basic IMAC. And for a small tidbit of info specific to the SW region... at the 4 contests I've been to, I haven't seen anyone with a plane less than 80cc in a class higher than Basic. I'd recommend the Wagstaff Extra instead of a glow engine plane. Plus the DA-50 is a sweet little engine. Oh, last thing...glow fuel=14.00 gallon...gas, $1.80. Or, best of all, save-save-save and get a Hangar 9 Extra and a ZDZ 80 or DA-100. You'll be glad you did.

These are my opinions based on my own personal experience (my .02).
Dave