No, an apex on the fence isn't worth it. An apex on the aquarium though, that is another story

Teasing aside if you are on the purchase fence for a controller, regardless of brand, then just make list of what you would like it to do and start there. It should help make the decision easier. A lot easier.
I'm not going to get into brands because I'm biased (own a neptune apex and have owned neptune products since 2000) but they can be helpful. I've used Neptunes original product with x-10 relays, I use an Apex now, and I've used, and still use, a Reef Angel. I've used them on a 100 gallon, 29 gallon bio cube, 40 breeder, and now a 210 gallon display. They work on all.
Custom lighting. Geo locations. Alternating pumps. Flow patterns. Feed mode. List goes on. One of the best features, in my opinion (don't get me started on this due to another thread), is the reach back / heart beat monitor. If the portal pings your controller, and it doesn't respond, you get a message. Could mean a plane hit your house, earthquake, Godzilla walked through your neighborhood, Mother Nature threw a temper tantrum, act of God, power outage, circuit tripped, fire, or anything else in between. Portal send a ping, controller acks back, no response, you get notified. What you do know is up to you. You know is all and that is important depending on what your next procedures are.
Everything else after that is secondary in my opinion. But yes, it can be beneficial on your tank regardless of size. However, list out what you would do first, then what you may grow into, then factor in if you will upgrade, and base your purchase on that. Maybe a simple wifi stripe or smartplug will work. maybe not. But start with your requirement list and go.
Oh - don't let entry price fool you. Sometimes cheaper isn't always best because the base unit may include something you may have to buy later to expand.