Have a look at the review I did 2yrs ago of our Honwave. With many more sea miles under its keel since then I still have the same high opinion on both design and quality for a bargain price. The alloy floor on that version is heavy and strong, it makes for a very stable rugged feeling boat.
Honwave T35-AE review
If weight is an issue you could look at the 3.2m air floor version which is close to the same price.
In fact weight may be an issue with your Tohatsu 9.8. We owned one up to 3yrs ago and they are brilliant on a lightly loaded, lightweight, air floor but raise the total weight (boat+people+kit) above a certain point and suddenly you are restricted to displacement speeds.