Hazelmere's post triggered this - If you grow grapes what are your growing, what is doing best? Most of my grapes are not in Hazelmere's link.
My general site is about elev 4620, narrow lot, vines protected from canyon winds, general slope of area is 4% down to the SW. Most vines are on the north side of my yard. Training system is best described as "pergola".
Malbec, 10 vines, planted in 2017. 7 vines at 4' spacing sit in front of a 7' concrete wall retaining 3' to 5' and next to the driveway, 2 vines at low corners of my garage and one behind a detached garage with top trellis wire above the garage roof. My detached unheated garage retains 5' to 6' of fill on 2 sides. Really well protected from canyon winds and the concrete wall helps temper heat in the summer and cold in the winter. They are very vigorous and max yield has been about 4lbs per linear ft of trellis. Powdery mildew resistance is good. Wall vines ripen mid september, garage corners ripen late september and behind the garage is typically mid October. Overall the Malbec seems best suited to my site.
Tempranillo, 9 vines, planted in 2017. 7 Vines at 6' spacing sit in front of a 2' wall retaining 18", in front of a 6' fence on the wall and next to the driveway, the other 2 are behind the garage and in front of an 8' tall fence. Well protected from canyon winds up to the top of the fence. Above the fence leaves have been stripped during canyon wind events. At the tempranillo the house shades much of the driveway but the neighbors house reflects a huge amount of light. The fences don't temper the heat as well and I've measured a 5 degree difference in high temp inside the canopy in the 15' from the Malbec wall to the start of the Tempranillos. They are vigorous but are less resistant to powdery mildew and in general never look as healthy as the malbecs. Max yield has been about 4lbs per linear ft of trellis. Wall vines ripen early to mid September, behind the garage ripen mid to late September.
Baco Noir 6 vines, planted in 2021, 2 along the driveway near the Tempranillos but no fence, 3 on the south side of the house and 1 behind the garage between a Malbec and Tempranillo. They don't seem as vigorous as the malbecs or tempranillos but they are still young. Max yield so far is about 1lb per LF but I expect that to go up but don't think they will ever get to 4lbs/LF of Malbec. All vines ripen in early September.
Tannats 5 vines planted in 2021. PLanted in front of the neighbors shed and in front of a 4' retaining wall. They are more vigorous than the Tempranillos and less than the Malbecs but look just as good as the Malbecs. Max yield looks like if will be 2 lbs per LF of trellis but they are young and I expect they will exceed 3lbs/lf. They ripen mid to late October.
I picked the Malbec due to the similar climate of Mendoza and Salt Lake. I picked the Tempranillo because I like cheap spanish wines and it was supposed to ripen earlier than many vinifera varieties. I planted the Baco's and Tannats in hope of getting a little more acid. The Tempranillo and Malbec PH has been in the 3.6 to 4.1 range although it seems to be trending down as the vines age.
Overall, if you asked me what to plant, I'd recommend the Malbecs 1st, Baco second, Tanat and Tempranillo tied for now (Tannat because of how late they ripen and Tempranillo because they just seem to struggle). They all seem to make good wine, my wife typically prefers the Tempranillo, I prefer the Malbec, this year is really the first real harvest year for the Bacos and Tannats.
So far no winter damage but my site is well protected, with no place for cold pools. We'll see, SLC definitely has the potential for significant cold, but since I moved here in 96 it has barely been below 0.