I own both the Seagull Extra-300s and the VectorFlight Edge-540 .
The Seagull is now one of those trophys that look like it flew through the wall. I would have used the cowling/nose area to mount on the other side of the garage wall......but there wasn't enough left of it.
The VectorFlight on the other hand has taken some rough tumbles and spills. But has stayed in one piece. This last crash I had because of attacking wasps on final should have ripped it to shreads. I ordered a new wing and cowling (they discounted the price I may add) and I'm back flying it again. Zero fuse damage.
Go with the VectorFlight. The Seagull and it's hardware package is cheap in comparison. You'll love flying a VF.

Seagull Models.
Pros:
Light weight and easy to build.
Pre-installed control surfaces.
Most hardware parts will interchange with Phoenix models. (Because they are one in the same.)
Cons:
One piece wings with weak hidden aileron servo trays.
Poorly constructed and produced in Vietnam.
Use of hot glue in places that demand epoxy or CA.
Never saw one without some type of factory defect.

VectorFlight Models.
Pros:
Built one at a time in Canada.
Solid construction that doesn't ship until inspected for flaws.
Two piece foam core wings.
Toughest ARF you'll ever own.
Customer Service of the highest quality. (Heck,, they will email you first most often.)
All top of the line brand hardware pack.
All AAA quality wood constructed with real bonding materials. (NO HOT GLUE)
Cons:
A bit heavier than lighter constructed ARFs.
Takes longer to build .
A longer wait for shipping sometimes. But worth it.