Milgard Tuscany is a good window but not a great one. Much better then the old Classic line. Milgard's marketing is second to none. Standard features are intercept spacer, single strength glass, double weaterstripping, nylon rollers, single hung does not tilt-in, 7 chambers and single lock on windows no matter what the size. The Milgard auto lock is a very nice feature but not very secure on large windows. To qualify for tax credit window needs to be upgraded to 3D-MAX glass package. 5/8 flat grids and 1" sculptered grids available.
Milgard patio door has plastic outside handle which I think is cheap looking. Only white, tan and brass finish is available on handle. Can have key lock added but no footbolt lock available.

Price wise it just depends on what dealer you find to give you a quote. The patio door is no comparison. Milgard's is still the old Classic style. Hopefully Milgard will come out with a Tuscany door line soon. Milgard Dealers are a dime a dozen. Amerimax is very selective and only opens select dealers. Remember Milgard was started as a new construction window company where as Amerimax as a replacement high end window company. Amerimax will be a higher priced window then the Milgard but I think is well worth the money.

Another window to look at is the Simonton 7300 or Simonton 7500.