I've never read either of those.
I'll put in another recommendation for Early Voyages, and DC TOS Vol. 1.
I haven't read a ton of Trek comics, but here are the ones I've rated at least 4/5 on Goodreads.
Everything from DC, Marvel and Wildstorm are on the DVD, IDW's stuff is not.
Early Voyages - This was originally published by Marvel, and was republished in one volume by IDW a few years ago.
TOS: Burden of Knowledge - IDW TOS miniseries, available both digitally and in print.
TOS/Planet of the Apes: The Primate Directive - 5YM era miniseries crossover with the original POTA movie. Available digitally and in print.
TOS: The Mirror Universe Saga - Part of DC's first TOS movie era series.
TOS: Enter The Wolves - TOS movie era one off from Wildstorm, prequel to TNG episode Sarek, and sequel to the novel Sarek. Written by Trek novelist AC Crispin.
Alien Spotlight - IDW miniseries with each issue set in a different era and focused on a different alien race. Available digitally.
TNG: Intelligence Gathering - IDW TNG series era miniseries. Available digitally.
TNG: Hive - IDW Post-Nemesis miniseries, not connected to the post-Nem novels. It was co-written by TNG, VOY, and ENT writer/producer Brannon Braga. Available in print and digitally.
DS9: Fools Gold- Early series era miniseries from IDW. Available digitally and in print.
Countdown - '09 movie prequel set post-Nem, not consistent with the novels or Hive. Available digitally and in print.
Captain's Log - IDW miniseries, each issue focuses on a different Captain who was not a series lead. Available digitally.
Deviations- Part of a series of one offs set in new alternate realities released by IDW. (Other issues in the series were released for The X-Files twice, My Little Pony, Judge Dredd, Ghostbusters, Transformers, Teengage Mutant Ninja Turtles, GI Joe and they are going to be doing an Orphan Black miniseries) Available in print and digitally.
VOY: False Colors - VOY series era miniseries released by Wildstorm.
TNG: Enemy Unseen - Collects the Wildstorm TNG miniseries, Perchance to Dream and The Killing Shadows, and the one off Embrace The Wolf. Perchance to dream was written by novelist Keith R.A. DeCandido
New Frontier: Double Time - Part of the New Frontier novel series, graphic novel from Wildstorm.
NF: Turn Around - NF miniseries from IDW, availble digitally. This is kind of a weird one because it is consistent with the NF novels, but there are Mirror Universe elements that are contradicted by a later story featuring the MU versions of the NF characters.