I have two Old West romances on my bookshelf -- The Inheritance by Joan Johnston & A Touch of Camelot by Donna Grove, along with a lot of others.

Try Texas Destiny and Sweet Lullaby by Lorranie Heath

Heart of the West by Penelope Williamson

Heather Graham's civil war trilogy (One Wore Blue, And One Wore Gray, And One Rode West)

Years by LaVyrle Spencer

You've probably read all the contemporary I can think of offhand! I like Lucy Monroe and Erin McCarthy lately. I enjoyed Meg Cabot's heather wells books(size 12, size 14 and big boned). the corset diaries. (all but the cabot books are pretty sexy reads btw), susan andersen's 'baby, im yours' was funny and liked her 'head over heels', 'getting lucky', and 'hot & bothered' these 3 are related. I also liked Julia Harper's 'Hot'..good storyline and a bit different. not super great but I liked it. tons of other contemporary ones I've liked.

know nothing about western though :-( at least not historical..

Some good authors to look into who write Old West Historicals are:

Jodi Thomas

Carolyn Davidson

Linda Lael Miller

Mary Burton

Cheryl St.John

Maggie Osborne

Ruth Langan

Jill Marie Landis

Steph Ann Holm

Jillian Hart

Lorraine Heath

Leigh Greenwood

I can recommend a few on my shelf that are suspenseful:

Dreamscapes: Flashback by Herrington

Missing by Sharon Sala

Yesterday's Flame by Elizabeth Hallam

Sherri

I have to agree with Tanya when it comes to those authors, i have a book or two from Carolyn Davison, not sure if they are Old West Historicals though, I have the McKettricks series from Linda Lael Miller, they are real good, and i have two books from Steph Ann Holms, dont think they are Old West Historicals, but she does put in historical info in her books that tie in with the present storyline.  as for suspenseful u going to have to check my list i haven't read all my books, some of them ive never read so i cannot say what they are. I do have some supense in my basement though, guess im going to have to bring them out

Shady

I have a few of them on my shelf, a couple indian books and a Bobbi Smith book.

Two of the best western historicals I've ever read were Under the Desert Moon by Marsha Canham, and Bequest by Candice Proctor.  Also, Anything for Love by Connie Brockway is very good.  I've seen mixed reviews on it, but I really liked it.  It's one of her very early books - possibly her first, I haven't looked - so the language is a little more modern than is appropriate, but it was still a very good story.

Sandra Hill Viking series has some Navy seals in them. The first few are just time traveling Vikings but the last 4 have had Navy seals in them too. Very good series, laugh out loud funny. The series starts out with "the last Viking"  I know you said you were gonna slow down on the seal books, but I love this series so much I had to mention them.