I'm not discussing the quality made of the high end usually Hypalon european brands such as Avon, Zodiac, Zillinger or the italian brands, just saying that are over priced. For the other inflatable mentioned brands should not be an issue if made in China or Korea as long the factories where they are being asembled know their bussiness well. That's the use of high quality PVC, Polyurethane or Hypalon fabrics along high quality 2 part glues for their respective fabrics used.
Have my own (Sea Rider) high quality Sib-Rib brand, outperforms any other brand sold here in terms of quality, fabric made and price. Been selling them along offering maintenance and repair services for the last 12 years. We guarantee what we sell without any doubt.
Going back to the original OP's post, has not stated which type of inflatable he wants, that's if being alum or an air deck one, if will remain inflated, deflated and stored in their bag or if it will live on a trailer. With respect to the gasoline motors must check that out in Jamaica as the motor will need a warranty if someting fails. Could buy a nice 2 stroke 5 HP Tohatsu or bit larger in VBI...
Personally deslike electric motors, will need to secure battery somewhere on the boat, for me that's an uncomfy issue. With a gasoline motor will have a greater boating autonomy compared to a battery. Just prop right the selected motor to power well whichever of both size sibs in whichever brand you want to go for if plan buying an underpowered small portable motor.
OTOH, will need to double the actual give or take money to buy a nice sib along a nice gasoline motor.
Happy Boating