I have both and I would go for the beaded one. It has more weight, the option of more girth. The silicone one is brilliant but the beaded steel is in a different class. If you have problems with grip though the silicone one wins.
Mrs Chimp really enjoys steel, though glass is still the go-to option. The Desire beaded steel one is more girthy than the Fifty Shades one, and the beads are much more pronounced. It is bloody heavy, but it's also a really nice shape. We haven't tried the weighted silicone one though so I can't compare.
The email says the site-wide 20% off and the extra £15 off £30+ offers are running all weekend, so I'd be tempted to see if either of them get popped back in the sale again and get a little more money off. 🙂
Good thought Ian Chimp re more money off - I'd assumed it was all just today...
I don't think either have been in the sale so far, but I do have a reviewer's discount to add...
The 20% off review discount can't be used with another coded offer so you'd have to pick the best one. I did a little number crunching in the Special Offers thread, though I didn't include the review discount. To be honest I think the 25% off £40+ Unlimited voucher is normally better than the review one, unless you really don't want to bump your basket up that high (or if you're not an Unlimited member).
For this weekend the £15 off £30+ one seems to be the best unless you're getting one item that's over £75. 👍
The silicone dildo is great if you like firm pressure, it's about the same weight as the beaded glass dildo if I remember my review correctly ( I may have to check) it's much easier to keep hold of when lubed up than glass or steel. It just have the weight of the 50 shades of grey steel dildo or the Desire ones. The girth is noticeably smaller too. It sounds like I am slagging it off, which I am not because we bloody love it. The steel just wins for us because of the weight and the girth. If you just want the firm pressure and a bit of weight then the silicone one will be great. Also storage, the silicone one comes with it's own little bag, the Steel one in a box with foam insert to keep it in place.
If it's weight you are after the silicone dildo is 325 grams about the same as the Glass beaded dildo which is 360. The 50 shades steel dildo is 760 and the Desire steel dildo is 780 grams with most of that weight at the large ball end.
I gave into temptation and bought the steel one last night. Managed to get it down to £24.99 from £49 using the 20% off offer and the £15 off anything over £30.