My alltime favourite is (until this day) the Clavia Nord Lead 3!
Can be aggressive, Fat, (kinda) analogue, sweet - and it looks great. Haven't really tried the newer ones (except a couple of minutes at NAMM last year), so can't judge them.

Also amongst my favs is my beloved Roland JP8080 (JP8000 rack version). A classic of trance, it is famous for it's supersaw, heavily used from the end of 90's onwards... Unfortunately mine is very buggy and needs repairs every now and then - otherwise really awesome.

Another great one I like to recommend is the Dave Smith Prophet 08 - analogue, can sound "heavy", "dirty" and "dreamy" at the same time.

Also used all kinds of Virus models over the years, great allrounders, but I personally prefer the sound characters of the synths above more.

What's your favourite Hardware Synths?