RCF; I use the Specialize Turbo Armadillo in 700x26 front and 28 rear (though once the rear wears out I'm going to 26 all the way around since the 28 is no wider); I do not find these too difficult to put on. I purchase the VAR from Rivendell since none of my LBS's carried it or could get it. It is smaller than the Speed Lever which allows to fit in the seatbag better, and it just snaps the last hard 2 inches or so on to the rim without damaging the rim, tire or tube. I did use a 23 the first time I bought the Armadillos and found the Kevlar beaded tire slightly easier to install vs the wire beaded Armos. But where I live the 23 are too narrow and follow the broken streets grooves and ruts whereas the 26 avoids most of that, so I switched to 26.

One thing to keep in mind though is the weight issue. The Armadillo in a 23 weighs 350 grms plus a 65 grm tube and your total weight is 415 grams; VS my last attemp against flats using a Michelin Axial Pro (260grms) plus a Slime Tube (120grms and the Slime will not work above 65psi) plus a 90grm Mr Tuffy for a total of 460gms; even the Armadillo size 26 weighs 420grms still less than all that other crap and get less flats than all that other crap.