I use a 23 gauge 1.5" for everything but some guys use a 25 to stick and a 18-20 gauge to draw with. Where are you going to do your sticks? The general rule is 1.5" for quads and glutes and 1" for delts, pecs, etc. I personally draw and stick with the same 23 gauge with no problems. The smaller the needle the larger the number. Just FYI. You can get pinz at www.getpinz.com
Is it just me or are the winny tabs cheaper than buyin injectable form for everyone? why not just get tabs in the first place they're easier to take and bring around with u if you wanna split your doses...