A nose heavy plane flys "heavier" than it really is. Once you set the CG where it belongs and set the controls for no more deflection than what is needed for normal flight you might find that the plane handles slow speed much better.

Obviously, wing loading is the most important factor for slow speed capability. It's easier to expand wing area in exchange for very little weight penalty than rely on gimmicks like mechanical flaps, wingtip plates, etc.
Your selection of onboard equipment can make a big difference in RTF weight. Think of those stick on chunks of lead that they sell to balance models as little, "Badges of Shame".
There's a big difference in weight handling ability with similarly equipped models if you compare a typical 3 foot span wing to a 4 footer. If you know what the model's true projected weight and wingloading are going to be, then you base your decisions on that. Find honest product reviews that you can trust. Avoid reviews that are done by guys who are "Shills", "Ringers", or "Sock Puppets", etc. for the hobby industry. Seek out reviews by guys who have no commercial interest in the products in question...like guys who spend time at these forums.