Valve choices

What's everybody using for bigger valves anymore? I still have a set of 1.70 1.44...
But watching all this hype lately got me thinking how about an 8 mm stem 1.89 LS valve cut down to 1.70 -1.72 and then a cut down 1.55 to 1.45.
Its .087 & .050 total off the o.d.
Then a re face and back cut.
The length is only around .070 longer, maybe knock .020 off that. I've taken .030 off of stems before ,no issues with hardness.
Is it easier to wait on SI to make more.
The ford valves are terrible peices..heavy