Psychonaut and Big D, you both recommend Saxon and say you haven't heard much Riot... WELL WHAT ARE YOU WAITING FOR?!
Soundmaster, both bands are very much recommended, just as Wyvern wrote! I like Riot much more, though...
They're one of my Top10 bands of all time.
They went thru different phases during their long music journey, but were outstanding in every single one of them! If you dig Whitesnake, Rainbow and similar hard rock legends (both in guitar and vocal department), yet you're a metalhead in heart, there's no band that combines hard and heavy better than Riot! Inishmore and Sons of Society prove the point in the best manner.
May I also point out that these guys are incredible players, both feeling- and technique-wise.
The two albums Wyvern didn't comment (Restless Breed and Born in America) are very good, especially Breed. Rhett Forester (RIP) did the vocals on both releases and he has a great OLDSCHOOL bluesy raspy voice.
That applies for Mike DiMeo (1993-present) as well, with the difference that Mike's a bit more sofisticated singer with a powerful and soulful voice, with tons of Coverdale and Rodgers references. (a bit of trivia: Mike was supposed to sing in Deep Purple before Battle... album came out, but the record company bosses figured it'd be better to assemble Mk.2 lineup and brought Gillan back to the fold.)
Tony Moore is the total opposite type of singer, he's a high-pitched screamer and suits the band perfectly in their heaviest Thundersteel - Privilege... era.
Narita is really expensive to buy on CD on eBay (25$+) but you can find it for much less on LP (if you have a record player, of course), I've seen them go for a few bucks. Alternately, there's always SoulSeek or some other form of mp3 sharing client to find it.
OT: did anyone listen to Faith And Fire? It's Tony Moore's and Mike Flyntz's band, the song samples I downloaded from their site are very Riotish (imagine that...
) and sound awesome!