I have been collecting wine for over three years and now have some bottles in my collection that warrant serious aging-2001 Opus One and Yquem are stars. I live in Denver, Colorado. No humidity with very hot summers and cold winters. I have a crawl space but no basement. I have been looking into wine cabinets and cellars on a limited budget. I have a small but growing collection-150 bottles. I know a person who is selling a Vinotemp 650 (like the 700) for $1,000. I am unsure about the reliability of these units and if this is a good investment. I would love any comments or advice you can offer to help me make a good, informed decision. Thank you.