I need to declare an interest, in that I work for a charter airline, and therefore a tour operator. That said, these are IMHO, points to consider:
1. Cost of transfer to hotac/accom via taxi?
2. Is hotac/accom half board i.e. as in brochure?
3. Most Tour Operator services are there not for when things go right, but for when they go wrong (contrary to popular understanding). Are you satisfied that you have appropriate protection for unfortunate eventualities while away?
If, after dealing with these questions, the answer is positive, then go for it!
Times are hard for Tour Operators, largely thanks to LoCo's and the Internet, and in some cases, their own stupidity. However, they do still offer a value added service that millions find convenient (not everybody has internet access, or the time and motivation to book that way). I believe that Tour Operators will adapt and survive in the new market, although maybe not all of them.
I expect that there may be other views taken about this...