I have a Del-ton with a Stag lower. Very good gun and I have had no problems at all.
Another good brand that should be around your price would be Rock River Arms.
Avoid big brand name manufacturers like Colt, S&W, etc. They are good guns, but you will be paying more just for having their name stamped on them. My Del-ton is just as good as the big brands, just less expensive.
Your Del-ton franken gun has a far lower resale value, even when purchase price factored, than the higher end rifles.