If I were you I would move up to something else. But you don't have to shell out for pricey salon shampoos at ALL. Salon people LOVE to tell people how bad drugstore, or even beauty supply store shampoos and conditioner are, giving scare stories about how they're all full of floor wax etc. But they're just trying to move product that's in the salon LOL! Drugstore shampoos and conditioners have come a long way. However, as with anything else, "your mileage may vary" meaning that a product that someone else raves about you'll hate and vice versa. Look into the newer(came out in the last year)L'Oreal Advanced Hair Care line - they have several different collections and usually you can get one on sale for just $3.99. They have Advanced Hair Care groups for Volume, Dry, Color-Treated, Total Repair 5(addresses several problems all at once and is actually quite good, Triple Resist(for breakage and hair fall).
With all this said, what do you hate about your hair? Is it dullness, damage, breakage, too-dry, too-limp? Yes, getting older with hair has its challenges - some people have thinning hair, and at the same time it's also drying out - add color in there and of course that's a challenge, especially if one has fine straight hair to begin with. One usually has to get in both protein and moisture in one's deep treatments as well. For intensive treatments, there are fewer of these at drugstore level(although there are some)than there are at say, Sally Beauty Supply. A great way to try treatments without spending big bucks until one finds a product one likes is to buy a trial-size packet at Sally Beauty Supply - that will often give one at least 2 treatments, often more depending on how much hair one has.
Off the top of my head, the Total Repair 5 line might be good - there's also a deep conditioner in the line that comes in a jar - the Total Repair 5 Damage Erasing Balm. The Total Repair 5 line has been pretty popular actually among reviewers elsewhere. I've used it myself - I do have to alternate that with sulfate and silicone-free products since I have curly hair. Another line that might be good is one of the Pantene lines, like the Age Defy line in the black packages. I know, LOTS of hairdressers love to slam this line across the board saying it's all floor wax and all. Another line that's pretty good for a drugstore line is Garnier Fructis - their new Damage Repair shampoo and conditioner has been getting good reviews, as well as their less-recent Triple Nutrition combo. All of these lines, while not as dirt-cheap as Suave, have decent products and are well-priced. All this said, I'm not knocking Suave - they do have a couple of good things - I use their Daily Clarifying Shampoo once a month just prior to coloring to get excess stuff out of my hair, or as needed.
Anyhow, some food for thought!:)