OK, I'm back to this tread with some results
I can be very persistent if I need something badly so I ordered Genmaicha samples from five tea companies to find out which one is the best to my taste.
Once again, I was looking for very intense roasted flavor and aroma without grassy taste.
1st place goes to Den's Genmaicha Satsuki, definetely the winner, just exactly what I was looking for. Highly aromatic tea with rich taste and slightly sweet aftertaste, just perfect.
2nd place - Upton's Genmaicha Kamakura (organic), less aromatic but very good overall. Looks like I will order it as well for a change of pace.
3d place - SpecialTea's Genmaicha, it contains both Bancha ans Sencha, is extremely fragrant but lacks the roast intensity. Very interesting tea.
4th place - Upton's Genmaicha, similar to Genmaicha Kamakura but rice was overroasted, almost burned. Mayby it was just a bad sample.
5th place - Teavana's Genmaicha, very good quality tea but too grassy to my liking.
6th place - Adagio's Genmaicha (sorry, Adagio) didn't have any roasted flavor whatever, tasted more like plain Kukicha.
I hope this short report will be useful to other Genmaicha lovers, please feel free to comment.
P.S. I also discovered the secret of steeping, Genmaicha tastes better if water temperature is about 190-195F, I use 1 heaping measuring spoon of tea for 10-12 oz of water and steep for 2 minutes.