Gargraves track, Ross switches.
Yes, Ross sells Gargraves flex track....because Ross' track design (staple-spikes) does not lend itself easily to a flexible track product.
Although it's not published in either company's spiel, I believe the two have a synergistic (word-of-the-day?) and complementary relationship they'd probably only toast to in a dark corner of a pub somewhere.
When I designed my layout using RR-Track software, I tried to use stock curves wherever possible...bending the flex track smoothly has a learning curve and some inherent waste. However, it is not only necessary but also esthetically pleasing to occasionally marry up two points on a track alignment with a smooth, free-formed curve not commercially available from either source.
The big advantages to Ross switches, IMHO, are the great variety of product, the smooth operation, the craftsman-like workmanship. The advantage of Gargraves track, IMHO, is it's flexibility. Since Ross uses staple-spikes to fasten their rails to the wood ties, the appearance (arguably more realistic?) is essentially different from Ross's trackwork, since GG uses no staples, no spikes.
Therefore, in order to keep some uniformity in the appearance of my layout track, I decided to use Gargraves everywhere...straights, curves, etc.... except for the switches. And the plethora of spikes/staples on the Ross switches actually added (IMHO, again) to the overall appearance by drawing attention to their added complexity and special function. Besides, if you consider a prototype switch construction, they have rail supports and fasteners that create a more complicated appearance than that of the approach tracks.
Anyhow, the two products look great, work great, are American-made, and, arguably, are cost effective. And in regard to the latter, BTW, did anyone take the time to read Steve Brenneisen's (Ross advertisement) price comparison with another track manufacturer in the latest issue of OGR??? Holy moly!....I had no idea how much overseas manufacturing had changed the pricing landscape...as well as availability ()...lately!!!
So, it really boils down to TEHO.
But since you asked....
KD