I previously owned the Slim BlueFin plate (the one that's around £139 on here) and I loved it other than the fact my unit had was really loud. After returning it I decided to spend more money on this (I paid £389) and so here are my thoughts.
This model has 60 levels compared to the Bluefin Ultraslim's 180. It has 3 programs compared to the Ultraslim's 5. It's much bigger and much quieter than the Ultraslim. I can imagine you'd be fine using this in a flat. The machine comes with a nice thick fitness mat as well.
It's very steady. My Ultraslim would vibrate around the floor if I stood off it when using Program 5. This is so solid that it stays in place.
The watch remote is cool, you slap it against your wrist and it snaps around automatically. Bit annoying that if you want to go to level 60, you have to press the + button 60 times.....same as the other model, you have to press it 180 times if you want the top speed. Surely there should just be a 'max' button?
Honestly, I'm disappointed. The Ultraslim REALLY shakes you and the levels get really intense, especially if you're doing a plank or push ups, your head will be shaking everywhere. This model just doesn't have the oomph to make me feel like I'm achieving much. It's a very gentle vibration, even on level 60 and you only really feel the side to side movement.
Would I recommend it? No. If you're new to vibration plates, just get the Ultraslim and use Program 1 and 2. They're both very gentle and you can grow with the machine. I'm returning mine as I couldn't get my phone to connect to the bluetooth speakers and even though it is now £100 cheaper than when I bought it, I won't be ordering it at the lower price as it's honestly not better than the Ultraslim model due to the lack of power in the vibrations. You should also be aware that this is a big heavy machine and not something an elderly person will be able to pick up and move about easily.
I'll be going back to the UltraSlim. Any questions, feel free to ask.