Btw, Anderson and Renewal (which is an Anderson Subsidiary something like Eagle Window or Silverline Window) are excellent marketing companies that happen to make windows. They are not bad by any stretch but much of their dollars are geared towards candy vs. R&D. Regardless of what brand you end up with know that is the installation that is far more important than the manufacturer...if I hazard a guess I'd say twice as important.
Consider this...most any window that seeks certification AWDM is tested pretty rigorously. So you can be reasonably sure that out of the box the window will perform. Past that it's a degree of how well the installer sums up the scenario and adjusts what he has to work with for a satisfying result. For instance, plumb and level are important but take a back seat to the frame being square so seals are in correct position to work as intended (sounds counter intuitive but it's fact). Another example, I've lost count of the number of decent quality vinyl windows where the installer didn't pay attention to the sill being fastened flat to the framing resulting in a hump at the center. Net effect being the sashes are difficult to lock together at the midrail because the lower cannot seat properly all the way down. Another you say...casement style windows ever so slightly our of square so the operator has to give some extra umph on the last turn of the handle for the lock tab(s) to grasp the sash fully shut. The lock wears out quickly, the screws holding the glide rail pull out from the sash and the seals from frame to operating sash don't do there proper job.
Anyway, been there done that. Separate subject...please do not consider what is called an "Insert" style of Double Hung window. Last Tuesday we put in an order for windows on a local project needing new windows for the majority of the home. Coincidentally 1-1/2 years ago the owner had 2 single Double Hungs and (1) 2X Wide Double Hung replaced by renewal. For my information I measured the difference between original units and the new Renewal Inserts. The Daylight Opening was reduced by 2-7/16" wide and nearly 4" in height with this style of "window inside a window" which is what an Insert essentially is. Outside of that, the replacement (at $1,175 each) did nothing to address the insulation around the unit, the flashing, the casing, etc... Not a good investment knowing that my crew will be pulling the old units entirely, installing correctly sized Anderson Woodwright units, foaming the cavities for air loss and completely wrapping the exterior flange/frame with Grace for a belt and suspenders leak free solution. Best part, our price is $865 per unit with materials and labor. This is a vinyl sided home and the windows do not have mullions, no extension jambs and standard 2-1/2" stained interior casings. Straight forward install but the price still reflects the difference between Renewal and a total replacement.
This was lunch so I'm out. If you have specific questions you are welcome to forward them here or PM me. Also, this should likely be moved to the DIY forum as it will get more mileage from the in the know crowd.