We have a very small space - at most 7 x 7'. I am interested in a 2-3 person tub for our moderate climate home. I will use it the most (and maintain it, my husband is not as interested) and am average size with back, knee and shoulder/neck problems. A corner unit would fit best but am concerned about proper jet positions and if they are deep enough. Lucky to have well-reviewed dealers locally - but haven't found a filled corner unit to test. Considering Hot Springs, Caldera and Marquis. Grateful for your advice.