Hi all, I am hoping to buy a greenhouse this year and was wondering if you have any advice / experience you could share. I'm considering a 10' x 8' as this is the largest size that will fit in the space I have. I can't decide whether to go for polycarbonate or glass. Also, which makes / suppliers are reliable. Is a solid concrete base a good idea? I have wondered if the base should have some drainage. Any info / advice would be appreciated. Thanks.