[subject] + [degree adverb] + [adjective] [subject] + 挺 + [adjective] + 的 [subject] + 不 + 太 / 很 / 特别 + [adjective]
These go where 很 goes, in front of the adjective, and unlike 很 they carry real weight. From weakest to strongest: 比较 "fairly", 挺…的 "pretty, quite", 特别 "especially", 非常 "extremely". 很 sits between 比较 and 挺 as the neutral filler.
As an adjective, 特别 means "special": 一个特别的地方.
比较 lets you avoid committing. 这个比较贵 is a soft way of saying something costs too much, and it does not need a second thing to compare against.
挺 is casual, and the sentence usually closes with 的. Leaving the 的 off is possible but sounds clipped.
不 in front of 太, 很 or 特别 softens the adjective to "not very". A degree adverb in front of 不 does the opposite and strengthens the negative.
One degree adverb per adjective, and none of them fit a 比 sentence – a comparison takes only 更 and 还.