Yes, OS produce some of the most reliable and easy to tune engines on the market. Not only will it be more powerful, reliable, easier to tune, but it will also last longer than a cheaper engine.

If you are at all interested in racing you should check this out - http://www.nnrc.co.uk/

I went on sunday with my MGT and had a great time. Good weather, fantastic track and very friendly racers (generous also - two people helped keep me running by supplying me with spares!)

It might be too far for you to travel, but i'd strongly reccomend it.