Both Lelo and Deluxe are fantastic!
Lelo feels nicer against the skin, but discharges rather quickly - I'm not talking about the two hours you get from each charge. Even if you didn't use it, you'll notice a significant loss in power in just a few days, which might be annoying. There's also that buzz to rumble shift that happens when you up the speed and put some pressure on the toy.
Deluxe has the issue of overheating if in use for more than 15-20 minutes (personally, I didn't notice that). And cleaning is a bit more fiddly because of the ridges/creases on the head. It's also rather loud on higher speeds.
They both have very similar power, and I still can't tell which one is more powerful. I also can't decide which one I like better alltogether. I enjoy them both equally :)
Lelo is better because:
- it is made of supersoft silicone
- it's rechargeable
- it's waterproof
- it's super-quiet
- it's got many functions and a novel "sense touch" thingy
- it's got a locking option
- it's designed beautifully (and in my opinion, makes it a nicer present because of that) - especially the "ivory" edition
- cleaning is easier
Deluxe is better because:
- it's got constant power, and a lot of it
- easy scrolling through speeds
- attachments work better on it because they're specifically designed for it
- massaging is easier for the one giving the massage because of the straight handle
- "forced" climax is easier to achieve with it
Hope this helps :) I haven't tried the Doxy yet so I can't compare.