Hi @Wheelie 
Welcome to the forum!
In terms of a precision clitoral stimulation guaranteed orgasm, for me it is 100% a suction toy.
I have the Melt and the InsideOut and they are both great though other people will also have high recommendations for the other suction toys I’m sure.
@Ian_Chimp 's full comparison round up of the suction toys available on Lovehoney can be found here.
For me, no egg is ever going to get me all the way.
In terms of bullets, yes, it probably is worth upgrading; again people will have very different ideas on their personal favourites but mine is the Mantric Bullet. Deep, rumbly and very powerful for it’s size and a lovely feeling silicone and shape too.
For fullness and overall amazing stimulation and orgasm I always have to recommend the Mantric Rabbit. Amazing all round toy with both great G-Spot and clitoral stimulation. My full review is here if you want to read it.