Hi Tracey
We just came back from Tobago last week with Virgin. They are THE best!
We've done a number of long haul with different airlines to different parts of the Caribbean and Virgin simply outshine all the rest. There is (if I remember??) 31" leg room in Ecomony compared to 38" in PE. This is more than other airlines. If you have a 6 hour drive to get home - phew - then might be best to book it, pay the extra and have a comfortable journey. However, my husband is 6'2" (I'm 5'8") and we went Economy, the leg room is not so much a problem, but getting a good nights sleep is another thing. We only had a 4 hour drive to get home but next time we go, we may well upgrade coming back, (if only to save the grumpiness once landed!!!

) BUT, Virgin are simply the best for long haul! EVERYTHING is free!! Drinks, headsets and the crew are very nice.
Hope you have a lovely time in Tobago. If you've been before, then I'll say no more, if this is you first trip, I hope you'll love is as much as we did!!!