We have the cheaper Silvercrest one from Lidl (no buttons, you press down on either the outer corners or middle front to tell it if you want to vacuum or seal). It does a fairly good job though. Recently bought 3 rolls of the ribbed "SousVide" bags as the roll that came with ran out. Perfect for sealing up small amounts of grain and hops before I put them back in the freezer. :thumb:
My wife uses it to package up home made spent grain dog biscuits for friends and family.
Combined with my Dymo labelwriter 450 (bought for printing membership cards back when I ran an amphibian keepers club), it is really handy.