I wouldn't say so having dealt with strings for last 20-25 years. Obviously, Solinco, Lux and Babolat have great offerings. BTW, Head would be in the list of these "premium" companies if not on top of that list. I just love their Lynx polys: regular, Edge, Tour, Touch, Power. Head Hawk and its different versions are really good polys too.
Lower priced is relative as well, say Torolines cost $12 a set just like Solincos. And I think it's a great thing that there's some discount codes around for 20-25% off. Not everyone is willing to spend $20 (+ stringing costs) on say a set of ALU Power or RPM Blast, enjoy it for an hour maybe two due to their horrible tension maintenance and go for restring again.
I'm fortunate to try most of the polys available on the market and I have 4-5 to-go options if I play the tournament. Couple things impressed me with Torolines: the right amount of snapback, not extreme as in Zero and not lacking as in 99% of other polys including "premium" ones so I can actually play say with Wasabi Pro blend until it breaks. ~9-11h or so for me and stringbed performs basically the same. There's minimal tension loss (then pre-strung at 10%), it takes very long time for strings to start notching and losing snapback/massive spin levels. Yeah, there's a bit of downside with "plasticky" feel but it's pretty similar to Hyper G/Soft and many other mid-stiffness or softer feeling polys. I'm trying Super Toro now and its feel is more defined and slightly crisper.