Derek, I sent you a pm back. Listen, if you want a good engine for a cheap price then your choices are very limited. These engines you are looking at are not considered "the best". They will do good but are not the best. There are many factors in this.

The best .28 engines are much more money than what you have looked into.

http://www.carolinasrc.com/Webstore/...idproduct=8838

http://www.carolinasrc.com/Webstore/...idproduct=5184

These are what are considered the best. You also have the Ninja .28 which is top notch. I feel the grp .28 is top of the line at this time.