Retired, in our late 50's wanting to buy first hot tub. Needing for therapeutic reasons, circulation, warmth. Multiple neck surgeries and also husband retired/disabled since 2005 after spending 30 yrs in Army. We live in Nebraska so we have all four seasons. Are hope is someone can just tell us what to buy since we haven't purchased before. We have been reading online but it gets confusing. Any help would be greatly appreciated.