I train at home and get the best results there. It also helps that one of my training partners is 325-330 lbs at about 6’1", has a Master’s Degree in exercise physiology and is very motivational.
I have more equipment than will fit into my garage, so some of it sits outside in the back yard. I have a power rack, standing calf machine, leg press machine, lat pulldown machine, flat, decline and incline utility benches, dumbell rack up to 80 lbs. (wish they went heavier but have olympic DB bars for heavier lifts), dip bars, a hyper-ext.
bench that I can perform glute/ham raises on, 12 olympic bars of varying types and about a ton of plates. All this is packed in the garage which is about a 12’ x 24’ area. It also has a kick ass surround sound system. I have more equipment in storage and plan to start a small gym in the future.
I either built or bought the equipment for a little of nothing but it has taken years to accumulate. Yeah, I’m bragging a little but my home gym is somewhat of a conversation piece among local lifters.
That being said, start with a power rack and an olympic set and just go from there. It will be money well spent with no regrets.