I can never imagine NOT having a borzoi around. They just make such good housemates.
Of sight hounds I like them all, but the ones on my favorites and possibly to own list are American stags, deerhound, azawakh, sloughi, galgo, taigan (I wish we could get them in the US). I also like little whippety dogs with coat, like the LHW, silkens, and those little wire coated appalachian whippet things.
Scent hounds are awesome too. Some day I want a nice coonhound or coonhound mix. Love plotts, walkers, black and tans and redbones.