Tippmann's X7 is a good, rugged and reliable marker for woodsball. Although no realy made for speedball it will hold it's own, in the proper hands, in the speedball areana.
Like any marker maintenace and upgrades will increase it's realiability on the field.
Contrary to what some believe, upgardes for the X7 are not illegal in Canada. Internal upgrades are available and so are most of the external mods for the X7 like - foregrips, stocks, carry handles, red dot sights etc. X7 barrels are compatible with the A5 models. The X7 comes in semi-auto but trigger upgrades are available already in R/T and the E-Grip models. So the upgrades and modifications you want on your X7 are limited only by your imagination.