I've had both. If I could not keep the slide room cool I would add them. Other than that they have caused me more problems than benefits. I don't have them now and have no intentions of adding them. Make sure your slide seals are in good condition and that they are turned properly. If mine wad up when extended I use the awning rod to straighten them. I also use 303 Protectant to keep them from sun rot. When I did have them I used a leaf blower prior to leaving because stuff will still get on top of the rooms. Good luck and don't be in a hurry to change anything.
2012 NuWay HitchHiker 363RSBDA, 2016 Ford F-350 Dually 6.7
2012 Nu Wa 363RSBDA
2016 Ford F-350 Dually 6.7