I've tried the topeak and had trouble putting enough pressure in. Recently purchased the Lezyne HPG mini floor pump... It works great, I could easily use it to put 120 psi into a tire (its rated to 160 psi). Its pretty small and light. Also the hose is long enough that you can even put the valve in the 4 o-clock position needed/recommended for slime tires and still place the pump on the ground and use as a floor pump.

Only problem I had was actually getting Lezyne to actually ship the product--took multiple follow-ups. If you want one get it from your LBS and not directly from Lezyne--they seem to have some problems with their online ordering system and sales department.