To achieve and maximize your fitness goals it is important to find the right piece of equipment that will fit your needs. If you are looking to create an environment that will help you with building muscle, I would recommend these pieces: 

Hoist Home Gyms:
PTS ENS 1
PTS ENS 2
PTS ENS 3
HF-4985 Smith Machine
HF-4985 ENS

BodySolid Home Gyms:
Pro Power Rack
Series 7 Smith Gym
Smith Gym

This should give you many ideas to help you. If you narrow your selection down to two or three I would love to help you weigh out your options and continue to help you find the right home gym.