I would recommend the flip-hole over the fleshlight to be honest, for several reasons:
1) It doesn't look like a sex toy. It's design is sleek, simple, and not intimidating.
2) Clean up is ridiculously easy - you don't have to wrestle the sleeve out and then clean it and wrestle it back in.
3) The unit has three pressure points which can really help improve and enhance the sensation - the FL has a hard plastic case that is suprisingly bulky and awkward to hole.
The FH is designed to be used up to a maximum of 50 uses but to be honest, I can see it going alot further if you clean and dry it properly and keep it in it's original packaging when not in use. The range of nodule and bumps inside the FH are far more exciting than the FL and it just feels better.
The Eggs are great too, but i've found the best use for those is for massaging the glans and the frenulem, rather than using it as a full on sleeve. You can use them more than once as well if you are gentle and use plenty of cleaner and let them dry. The Hard-Boiled 6-Pack is highly recommended (check out the review I left for it).
The Cobra Libre as mentioned above is a fantastic toy, well worth the money, but it is a completely different sensation to a masturbation sleeve. The unit has a 3.5 inch 'hole' in which you slip into, and it has a ridge which presses against the frenulem, and then the powerful vibrations help bring you to a knee-trembling climax. If that interests you, perhaps maybe experiment with a LH mini wand, and use the wand head on the underside - if that does anything for you, the Cobra Libre would definitely be a good investment for your sexual future!