Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Should I buy the clamp also, or will the vacuum suction be enough?
Document: I had borrowed a back to basics model from a friend and liked it. I was looking to buy my own peeler. They all look and work basically the same. I bought this model based on recommendations I read on Amazon.I bought this model because it had the clamp, thinking I might need it. The suction base works well enough as long as you have a smooth surface, the suction base should be fine. If you don't, then buy a model with a dedicated clamp.
Still, I was willing to deal with slipping this back in place since it was still helpful with most apples.Then the vacuum base stopping working well, even with putting water on the table as suggested. Finally it failed entirely.Also, the mounted corer started having trouble staying in place and would get pushed to the side as it passed through the apple.
Why did I wait so long to buy one of these? I loved it!! The suction cup held it secure to my counter top and I proceeded to work up a half bushel of apples. It takes less than 10 seconds to peel, slice and core an apple. Even a pre=schooler can run this. It's so easy and does an excellent job. I'm going to buy another for a friend. Thank you!! !
This apple peeler works quite well on big and small apples. Has a bit of trouble if you hit a mushy spot, but that's to be expected. The suction cup holds it to my counter quite well.That said, I used it for two months - maybe once or twice a week - and just the other day one of the prongs that holds the apple broke off. Haven't seen a way to fix it, but just keep an eye on this if you buy it!
The apple peelers seems to work fine.The suction cup also seems to work fine so far. Have not used it myself, but my wife has and I have heard no complaints.
The apple master components work fine, BUT, the vacuum base does not work correctly. We have tried different surfaces, cleaned the base, wetted the base, and still it does not keep suction. Somewhat aggravating.Other than that, am pleased with the unit.
I have a small orchard and dry apples and pears each summer and this shortened the process by literally hours. It would be similarly useful for making pies or treating the kids to a quick and  healthful snack. The device is also very easy to clean. I was initially sceptical if the suction mount would work, but it does so flawlessly. the device is versatile in that it wll just peel friut, core and slice friut, or it will do all three.
I live in New England and apples are just part of out diet. This thing makes me smile every time I start spinning the apples and makes very quick work of crisps and pies. I purchased this for a friend that bakes constantly and she is raving. I like this particular one because it offers both the suction or counter top edge mounting. You can also adjust the angle of the blade which when done correctly, makes the job a breeze.
it worked as I expected. The suction cup did not work on my counters(hence the 4 stars) but the clamp held it securely. I would definately purchase this item again and would recommend it to my friends and family.
This is great for peeling and coring large quantities of apples. I used it to peel more than 20 lbs of apples for canning. It works like a charm. I really like the suction cup bottom. I have a rounded lip on my countertops, making it hard to use a clamp. I like that it can make slices or leave the apple whole. The color is great, too.
Answer: I received a clamp in the package; I don't think it would be a separate purchase.The suction depends on your countertop. It did not do well on granite (which is not a perfectly smooth surface.)