Im considering an inground spa tub. We have a gunite pool now with a spa now but are moving and we really only use the spa. I'm looking for something on the larger side 8 to 10 people. I found Immerspa, but Ive read some bad things about installation. Their product is in line with what we are looking for. Can anyone recommend something like this or share experiences? Or maybe we just have a custom gunite one installed....so much $$$$$ though!