Hi Dorothy
I did Costa Rica & Nicaragua in March of this year and I can say its the most wonderful of tours, there is so much wildlife and its not always a million miles away from you and I must say every day had something a little different, some of the places we stayed also are worth a mention, there also was the hanging bridges at Arenal and cloud forest walks which were very interesting, a night jungle walk was thrilling as was the zip line, Nicaragua was again so very different and we enjoyed out three nights there, the boat ride round Nicaragua lake was simply breath taking with again so much wildlife
I have also done Borneo of which we were so lucky to see Orangs in the wild not every tour were so lucky but again the time at the lodges were amazing as were the all the boat wildlife cruises, KK was pretty ordinary to be honest but the visit to see the orangs at Sepilok is a memory in itself , also done Peru with Amazon but with Travelsphere as longer tour for not much more which is another wonderful tour
hope this helps you decide
Regards
Dave