The deluxe blend air II system is separate and works with any t-stat when wire nutted into circuit.
Any Honeywell t-stat that is listed for gas furnaces and a/c if you have a/c will work. IF you have a/c and it is a heat pump, it will have to be for a heat pump also.
I do not keep a list of all the t-stats would work as there are many, but as long as it states it is for what you have, you will be fine.
You can also take your current one with you to get a matching digital one.
If you get a programmable, get one that is battery operated or you would have to run a common wire from transformer to t-stat for it to work.
For best results, go to an hvac supply store, though better service and t-stats, will also cost more.
You can get good results from Home Depot that will serve you well also. It's just like with anything, you get what you pay for and there are reasons things are cheaper at big box stores.
However, I would not be afraid to buy a Honeywell t-stat at Home Depot and install in my home.
Some people are Humbly Grateful, while some are Grumbly Hateful.................... Which one are you ?