I used to ride an Infinity and for the last 3 years I ride a Roxy Envi-- also a Mervin board like the TRS, also rocker camber. The flex is different than the Infinity. The Envi is smoother riding at speeds. It is good on all conditions. Also it's lighter than the Infinity. I'd say it is just as responsive for quick turns, etc. It has more flex between the bindings than my NS. Great on powder-- I can lift the front of my board with my foot, where on the Infinity I have to lean way back.
I was going to get the Lotus a few years ago and just couldn't find one in local demos. Also I wanted to try magna trax, which I never notice until other people are complaining about icy conditions. I did demo the Lotus last year and found it stiffer-- just not the same torsional flex. Not as lively. The Roxy boards I have are rated about the same stiffness. You might be pleasantly surprised by the TRS.
Here is a link
to a review I found online.
(I ride a Roxy Envi for a few years and recently bought a sale Eminence because they don't make the Envi anymore.)