Pretty much a toss up in term of driving time as one is very close to SeaWorld (walkable across Central Florida Parkway and the SeaWorld parking lot) and one is very close to the Disney parks - and the HGVC is roughly between the two theme park areas. And all three are convenient to any of those theme parks
HGVCs are generally both larger and more upscale than Wyndham timeshare resort villas so based on creature comfort alone I'd choose Hilton. However, I think they're both good choices.
FWIW, I'd note that there's a third HGVC (and the newest Orlando Hilton timeshare) - Parc Soleil - that's on Palm Parkway just north of the Downtown Disney/Lake Buena Vista area and also convenient to both Disney and SeaWorld.
Dick Taylor