I opted for the pods when I bought mine - the tach is, in my opinion, necessary, and the analog clock, given that there weren't digital clocks when I grew up, is far easier to read, especially while driving, than a 1/4" high, stuck in a corner of the bottom of the dash digital clock.
Be that as it may, I did buy a scangauge and installed it, because now I have a gazillion other things to watch (4 at a time), with the most common being MPG, water temp, voltage, and gallons per hour. And, with it installed under my radio (you can find that post somewhere around this place), it is easy to see while driving...