Hi, and welcome. Plenty of good tents out there I don't think the brand matters too much. a.c infinity, gorilla grow, vivosun, spiderfarmer, mars hydro all make good tents and I'm sure there is more. As far as strains that's all up to you as well man, just because somebody else likes it doesn't mean you will. Just grow something and if you like it clone it or grow it again. I like having variety so I'd rather take the risk and grow something else before stocking up on a bunch of weed that I have built up a tolerance for. Different strokes for different folks though, just do what makes you happy.

The tents you can get on eBay are nice. I have a 4x4x8 and a 2x4x6. Watch putting them together(this might be true for all tents) the pieces that hold the bars together will tear the tent material. Other that that I have no complaints with ebay tents.