Machete and T.Rice are two very different boards. The Machete is a much better freestyle board while the T.Rice is a much better all-mountain board. Both are geared towards all-mountain freestyle with the Machete being more freestyle and T.Rice being more all-mountain.
The T.Rice is considerably stiffer than the Machete and is stiffer than your TRS. The Machete is a bit softer than the TRS.
153 in T.Rice or 155 in Machete for you.
Oh, both boards are good in powder. I personally think the T.Rice is better suited to your style. If you plan on getting heavy with the freestyle, then Machete.