so im planning on buyin myself a gosm. my problem is i cant not find the 36" big block, that i see so many of you use, in my city or surrounding areas. i found a web site that has them for 179 and then 55 bucks for shipping. my local wally world has the smaller 34" gosm for 128. do any of you think that it is worth the extra 100 bucks to get the big block? or should i go with the smaller? i noticed that the smaller has no side vents to regulate heat. is this a problem? any and all advice would be most helpfull! thanks!