Hi Del,
Dreamfoam certainly makes some great quality/value mattresses and as you know they are a member here which means I think highly of them and I believe they compete well with the best in the industry.
Of course you will still need to decide on the type of mattress and materials you tend to prefer because they have a little bit of almost everything.
Since you are in a higher weight range it would be a good idea to focus on higher quality more durable materials and post #3 here and the posts it links to has more information that may be helpful.
Phoenix