I want to start preparing myself for anal sex. In other words I want to stretch myself enough so it won't be difficult for a man to penetrate me, either on him or myself.The problem with dildos is I can't find a comfortable position to hump one for more than a few minutes, and it's an uncomfortable angle for my hand.The problem with buttplugs is gas can build up so you can't wear them too long.So what I'm thinking of getting is something that will expand me without sealing me off lol. Here are some links to some dilators I'm considering getting. Can I ask you guys your opinions on these? Maybe you have some other suggestions?

• BDSM type dilator: My top choice so far. Made of metal. Offers most dilation. Doesn't need lube. Can fit a fist in case I want to consider getting into something really kinky. (Yes, I know this will not happen overnight.) Takes awhile to adjust. The six pressure points might not do a good job of spreading the pressure of the spread.
• Tulip looking dilator: No adjustment. Pressure points are spread out over more of an area. Might be difficult to pull out because its natural state is expanded. Outward pressure might erode over time.
• Speculum: Only one adjusting screw. Goes in easily. Expands only in a V formation. Possibly just for vaginas?
• Hollow buttplug design or another one or metal one: Stays in shape (I assume) but can't increase in size. Moderate to slightly difficult to insert and remove.
• Spool looking dilator: Minimalistic buttplug. Also keeps shape but can't increase in size. Probably best for wearing in public. Expands sphincter but keeps rest of anus tight. (Is this desirable?)
• Anal chastity device: Metal. Pressure points are spread out. Added use in BDSM activity. Most expensive. If the key is lost I'm screwed...or rather not screwed lol!

I prefer to get something that's expandable as I loosen up but not too interested in anything inflatable. Aside from being restrictive they break down easily. I know from experience.I don't plan to leave the house for long periods of time with anything in me, but would consider leaving something in for short trips, both to make time and honestly the idea of having something inside me while no one else knows is kind of kinky to me!Buying more than one is also an option for me.