Posted my previous (review) prior to reading your comment about stalling your H9 Cessna during a dead stick aproach. No aspersion cast upon either it or your competency, but the following may prove informative in making your decision.

Despite reading opinion to the contrary and admittedly contradicting in degree my own previous statement to effect of someone who can handle take-off's and landings with a trainer competently can fly it, I wouldn't recommend Seagull's PC-9 to your average 'anyone' as their first low wing plane. OTOH if I personally knew them to be disciplined and confidently competent with that trainer, my recommendation would be as suggested in my earlier review.

Despite the claims on Seagull's PC-9 box art, in reality SIG's Four Star 40 OTOH is a better first low wing and/or second model on which to gain competence, confidence and valuable experience. I have flown both.

Why?

Seagull's PC-9 really demands a confidence born of genuine competence to fly it safely. That doesn't mean one has to be an R/C ace by any stretch of the imagination. But it does mean the said confidence has to be substantiated by more than an inflated ego. ie: Skill should balance confidence in equal proportion.

It's vices are that it is slippery at full throttle, even with a previous generation .46, requiring its pilot to think and plan well ahead. If you don't, it'll take you to the scene of the inevitible crash sooner than you want to go there.

It is neutrally stable bordering upon negatively stable around the longitudinal (roll) axis. Even with the CG placed as per recommendation, it is sensitive in pitch as well in cruise flight within its niche envelope. Combine this with the irresistable urge to drive it around at high throttle settings where it excels, and it becomes very fatiguing to fly requiring a high sustained concentration level even with considerable acquired reflex motor skill derived of ability and experience.

Because it is so clean and fast, it takes time to decelerate to approach speed even at flight idle, again requiring anticipation. Whilst it has no low speed bite-yer-arse surprises in the approach config, it requires a different kind of anticipation at low speed due to the relatively unresponsive controls and inertia. Think input - wait 2 seconds..respond..etc. Whilst things are now happening slowly, there's a mental transition to be made. If you approach either too fast or with throttle idle set a fraction high (think one, perhaps two notches on the trannie), the PC-9 will float forever, especially once in ground effect, so you'd better have an unobstructed approach (think flat approach), a long strip or enough fuel to execute several go-arounds until you nail it. Similar ground distance with zero headwind, minus float. The key is to be on speed on approach. If not, go around and try again until you are.

For take-off, it must be flown off the ground or rotated to an initial shallow angle of attack and allowed to accelerate to cruise & manoeuvreing speed. Until it has, general control authority is poor requiring large control (stick) deflection. Early rotation of the nose 3D style attempting a Saturn V climbout will likely result in a (full) power on dynamic stall with the model consequently rolling onto its back with poor aileron/elevator, and virtually no rudder response authority. The trap here for the inexperienced or less than competent is a very real risk of overcontrolling or dumb thumbing in panic to recover orientation, control and height which consequently worsens the situation by raising the nose even further stalling the wing and decelerating the model as they watch it plow uncontrollably into the dirt.

The PC-9 is harder to fly than any of my a pattern or sports pattern models IMO. It is also a lot of fun to fly and I'd never be without one in my hanger, but it is deserving of respect and requires discipline and a modicum of skill if one expects it to survive for any length of time in service. Just peruse the "I had one once before it crashed" stories in that link I supplied you.

Don't want to frighten you off as it's no demon by a long shot, but it's no lapdog either. Think Cheetah, Leopard, Panther and you'd be close.

Though it can be fast with a grunty 2 stroke up front, SIG's Four Star 40 is far more forgiving.